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Christiane albrecht

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https://www.readbyqxmd.com/read/28629567/ct-coronary-calcium-scoring-with-tin-filtration-using-iterative-beam-hardening-calcium-correction-reconstruction
#1
Christian Tesche, Carlo N De Cecco, U Joseph Schoepf, Taylor M Duguay, Moritz H Albrecht, Domenico De Santis, Akos Varga-Szemes, Virginia W Lesslie, Ullrich Ebersberger, Richard R Bayer, Christian Canstein, Ellen Hoffmann, Thomas Allmendinger, John W Nance
OBJECTIVES: To investigate the diagnostic accuracy of CT coronary artery calcium scoring (CACS) with tin pre-filtration (Sn100kVp) using iterative beam-hardening correction (IBHC) calcium material reconstruction compared to the standard 120kVp acquisition. BACKGROUND: Third generation dual-source CT (DSCT) CACS with Sn100kVp acquisition allows significant dose reduction. However, the Sn100kVp spectrum is harder with lower contrast compared to 120kVp, resulting in lower calcium score values...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28623979/placental-glucose-transporter-glut-1-is-down-regulated-in-preeclampsia
#2
Benjamin P Lüscher, Camilla Marini, Marianne S Joerger-Messerli, Xiao Huang, Matthias A Hediger, Christiane Albrecht, Marc U Baumann, Daniel V Surbek
INTRODUCTION: Transplacental fetal glucose supply is predominantly regulated by glucose transporter-1 (GLUT1). Altered expression and/or function of GLUT1 may affect the intrauterine environment, which could compromise fetal development and may contribute to fetal programming. To date it is unknown whether placental GLUT1 is affected by preeclampsia, which is often associated with intrauterine growth restriction (IUGR). We addressed the hypothesis that preeclampsia leads to decreased expression and function of placental GLUT1...
July 2017: Placenta
https://www.readbyqxmd.com/read/28608851/a-global-dataset-of-crowdsourced-land-cover-and-land-use-reference-data
#3
Steffen Fritz, Linda See, Christoph Perger, Ian McCallum, Christian Schill, Dmitry Schepaschenko, Martina Duerauer, Mathias Karner, Christopher Dresel, Juan-Carlos Laso-Bayas, Myroslava Lesiv, Inian Moorthy, Carl F Salk, Olha Danylo, Tobias Sturn, Franziska Albrecht, Liangzhi You, Florian Kraxner, Michael Obersteiner
Global land cover is an essential climate variable and a key biophysical driver for earth system models. While remote sensing technology, particularly satellites, have played a key role in providing land cover datasets, large discrepancies have been noted among the available products. Global land use is typically more difficult to map and in many cases cannot be remotely sensed. In-situ or ground-based data and high resolution imagery are thus an important requirement for producing accurate land cover and land use datasets and this is precisely what is lacking...
June 13, 2017: Scientific Data
https://www.readbyqxmd.com/read/28590074/evolutionary-bottlenecks-in-brackish-water-habitats-drive-the-colonization-of-fresh-water-by-stingrays
#4
Kim Nadine Kirchhoff, Torsten Hauffe, Björn Stelbrink, Christian Albrecht, Thomas Wilke
Species richness in freshwater bony fishes depends on two main processes: the transition into and the diversification within freshwater habitats. In contrast to bony fishes, only few cartilaginous fishes, mostly stingrays (Myliobatoidei), were able to colonize fresh water. Respective transition processes have been mainly assessed from a physiological and morphological perspective, indicating that the freshwater lifestyle is strongly limited by the ability to perform osmoregulatory adaptations. However, the transition history and the effect of physiological constraints on the diversification in stingrays remain poorly understood...
June 7, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28579164/impact-of-strut-thickness-on-acute-mechanical-performance-a-comparison-study-using-optical-coherence-tomography-between-desolve-150-and-desolve-100
#5
Niklas F Boeder, Oliver Dörr, Timm Bauer, Alessio Mattesini, Albrecht Elsässer, Christoph Liebetrau, Stephan Achenbach, Christian W Hamm, Holger M Nef
OBJECTIVE: To evaluate the acute performance of a novolimus-eluting bioresorbable scaffold (BRS) with different strut thickness (DESolve system 150 and 100) using optical coherence tomography (OCT) in terms of appropriate scaffold deployment. BACKGROUND: Outcome after BRS implantation seen in registries and meta-analyses continue to show a higher rate of scaffold thrombosis than those reported with DES. Thus, second scaffold generations with lower strut thickness might have potential advantages in terms of flow disturbance...
May 24, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28575639/matrix-production-affects-mri-outcomes-after-matrix-associated-autologous-chondrocyte-transplantation-in-the-knee
#6
Christian Albrecht, Carla-Antonia Reuter, David Stelzeneder, Lukas Zak, Brigitte Tichy, Sylvia Nürnberger, Sandra Boesmueller, Stefan Marlovits, Siegfried Trattnig, Stefan Hajdu, Silke Aldrian
BACKGROUND: Matrix-associated autologous chondrocyte transplantation (MACT) has been an effective therapy for large, full-thickness cartilage lesions for years. However, little is known about how graft maturation is affected by characteristics of transplanted chondrocytes. PURPOSE: To investigate the influence of gene expression of chondrocytes at the time of transplantation on MRI outcomes up to 2 years after MACT. STUDY DESIGN: Case series; Level of evidence, 4...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28554368/mental-disorders-in-patients-with-chronic-pelvic-pain-syndrome-cpps
#7
Christian Brünahl, Christoph Dybowski, Rebecca Albrecht, Björn Riegel, Johanna Höink, Margit Fisch, Bernd Löwe
OBJECTIVE: Chronic pelvic pain syndrome (CPPS) is a debilitating pain condition with prevalence rates between 2.0% and 26.6%. Studies indicate that CPPS is often associated with psychosocial factors, but little is known about the presence of full-blown mental disorders in female and male patients with CPPS. Therefore, the aim of this study was to investigate the frequencies of mental disorders in patients with CPPS. METHODS: Cross-sectional data were collected from patients visiting a specialized outpatient clinic...
July 2017: Journal of Psychosomatic Research
https://www.readbyqxmd.com/read/28436984/genomic-analyses-identify-hundreds-of-variants-associated-with-age-at-menarche-and-support-a-role-for-puberty-timing-in-cancer-risk
#8
Felix R Day, Deborah J Thompson, Hannes Helgason, Daniel I Chasman, Hilary Finucane, Patrick Sulem, Katherine S Ruth, Sean Whalen, Abhishek K Sarkar, Eva Albrecht, Elisabeth Altmaier, Marzyeh Amini, Caterina M Barbieri, Thibaud Boutin, Archie Campbell, Ellen Demerath, Ayush Giri, Chunyan He, Jouke J Hottenga, Robert Karlsson, Ivana Kolcic, Po-Ru Loh, Kathryn L Lunetta, Massimo Mangino, Brumat Marco, George McMahon, Sarah E Medland, Ilja M Nolte, Raymond Noordam, Teresa Nutile, Lavinia Paternoster, Natalia Perjakova, Eleonora Porcu, Lynda M Rose, Katharina E Schraut, Ayellet V Segrè, Albert V Smith, Lisette Stolk, Alexander Teumer, Irene L Andrulis, Stefania Bandinelli, Matthias W Beckmann, Javier Benitez, Sven Bergmann, Murielle Bochud, Eric Boerwinkle, Stig E Bojesen, Manjeet K Bolla, Judith S Brand, Hiltrud Brauch, Hermann Brenner, Linda Broer, Thomas Brüning, Julie E Buring, Harry Campbell, Eulalia Catamo, Stephen Chanock, Georgia Chenevix-Trench, Tanguy Corre, Fergus J Couch, Diana L Cousminer, Angela Cox, Laura Crisponi, Kamila Czene, George Davey Smith, Eco J C N de Geus, Renée de Mutsert, Immaculata De Vivo, Joe Dennis, Peter Devilee, Isabel Dos-Santos-Silva, Alison M Dunning, Johan G Eriksson, Peter A Fasching, Lindsay Fernández-Rhodes, Luigi Ferrucci, Dieter Flesch-Janys, Lude Franke, Marike Gabrielson, Ilaria Gandin, Graham G Giles, Harald Grallert, Daniel F Gudbjartsson, Pascal Guénel, Per Hall, Emily Hallberg, Ute Hamann, Tamara B Harris, Catharina A Hartman, Gerardo Heiss, Maartje J Hooning, John L Hopper, Frank Hu, David J Hunter, M Arfan Ikram, Hae Kyung Im, Marjo-Riitta Järvelin, Peter K Joshi, David Karasik, Manolis Kellis, Zoltan Kutalik, Genevieve LaChance, Diether Lambrechts, Claudia Langenberg, Lenore J Launer, Joop S E Laven, Stefania Lenarduzzi, Jingmei Li, Penelope A Lind, Sara Lindstrom, YongMei Liu, Jian'an Luan, Reedik Mägi, Arto Mannermaa, Hamdi Mbarek, Mark I McCarthy, Christa Meisinger, Thomas Meitinger, Cristina Menni, Andres Metspalu, Kyriaki Michailidou, Lili Milani, Roger L Milne, Grant W Montgomery, Anna M Mulligan, Mike A Nalls, Pau Navarro, Heli Nevanlinna, Dale R Nyholt, Albertine J Oldehinkel, Tracy A O'Mara, Sandosh Padmanabhan, Aarno Palotie, Nancy Pedersen, Annette Peters, Julian Peto, Paul D P Pharoah, Anneli Pouta, Paolo Radice, Iffat Rahman, Susan M Ring, Antonietta Robino, Frits R Rosendaal, Igor Rudan, Rico Rueedi, Daniela Ruggiero, Cinzia F Sala, Marjanka K Schmidt, Robert A Scott, Mitul Shah, Rossella Sorice, Melissa C Southey, Ulla Sovio, Meir Stampfer, Maristella Steri, Konstantin Strauch, Toshiko Tanaka, Emmi Tikkanen, Nicholas J Timpson, Michela Traglia, Thérèse Truong, Jonathan P Tyrer, André G Uitterlinden, Digna R Velez Edwards, Veronique Vitart, Uwe Völker, Peter Vollenweider, Qin Wang, Elisabeth Widen, Ko Willems van Dijk, Gonneke Willemsen, Robert Winqvist, Bruce H R Wolffenbuttel, Jing Hua Zhao, Magdalena Zoledziewska, Marek Zygmunt, Behrooz Z Alizadeh, Dorret I Boomsma, Marina Ciullo, Francesco Cucca, Tõnu Esko, Nora Franceschini, Christian Gieger, Vilmundur Gudnason, Caroline Hayward, Peter Kraft, Debbie A Lawlor, Patrik K E Magnusson, Nicholas G Martin, Dennis O Mook-Kanamori, Ellen A Nohr, Ozren Polasek, David Porteous, Alkes L Price, Paul M Ridker, Harold Snieder, Tim D Spector, Doris Stöckl, Daniela Toniolo, Sheila Ulivi, Jenny A Visser, Henry Völzke, Nicholas J Wareham, James F Wilson, Amanda B Spurdle, Unnur Thorsteindottir, Katherine S Pollard, Douglas F Easton, Joyce Y Tung, Jenny Chang-Claude, David Hinds, Anna Murray, Joanne M Murabito, Kari Stefansson, Ken K Ong, John R B Perry
The timing of puberty is a highly polygenic childhood trait that is epidemiologically associated with various adult diseases. Using 1000 Genomes Project-imputed genotype data in up to ∼370,000 women, we identify 389 independent signals (P < 5 × 10(-8)) for age at menarche, a milestone in female pubertal development. In Icelandic data, these signals explain ∼7.4% of the population variance in age at menarche, corresponding to ∼25% of the estimated heritability. We implicate ∼250 genes via coding variation or associated expression, demonstrating significant enrichment in neural tissues...
June 2017: Nature Genetics
https://www.readbyqxmd.com/read/28436227/it-takes-two-to-tango-double-layer-selective-contacts-in-perovskite-solar-cells-for-improved-device-performance-and-reduced-hysteresis
#9
Lukas Kegelmann, Christian M Wolff, Celline Awino, Felix Lang, Eva L Unger, Lars Korte, Thomas Dittrich, Dieter Neher, Bernd Rech, Steve Albrecht
Solar cells made from inorganic-organic perovskites have gradually approached market requirements as their efficiency and stability have improved tremendously in recent years. Planar low-temperature processed perovskite solar cells are advantageous for possible large-scale production but are more prone to exhibiting photocurrent hysteresis, especially in the regular n-i-p structure. Here, a systematic characterization of different electron selective contacts with a variety of chemical and electrical properties in planar n-i-p devices processed below 180 °C is presented...
May 8, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28408873/neurofeedback-of-slow-cortical-potentials-in-children-with-attention-deficit-hyperactivity-disorder-a-multicenter-randomized-trial-controlling-for-unspecific-effects
#10
Ute Strehl, Pascal Aggensteiner, Daniel Wachtlin, Daniel Brandeis, Björn Albrecht, Maria Arana, Christiane Bach, Tobias Banaschewski, Thorsten Bogen, Andrea Flaig-Röhr, Christine M Freitag, Yvonne Fuchsenberger, Stephanie Gest, Holger Gevensleben, Laura Herde, Sarah Hohmann, Tanja Legenbauer, Anna-Maria Marx, Sabina Millenet, Benjamin Pniewski, Aribert Rothenberger, Christian Ruckes, Sonja Wörz, Martin Holtmann
Background: Neurofeedback (NF) in children with attention-deficit/hyperactivity disorder (ADHD) has been investigated in a series of studies over the last years. Previous studies did not unanimously support NF as a treatment in ADHD. Most studies did not control for unspecific treatment effects and did not demonstrate that self-regulation took place. The present study examined the efficacy of NF in comparison to electromyographic (EMG) feedback to control for unspecific effects of the treatment, and assessed self-regulation of slow cortical potentials (SCPs)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28404863/individuals-with-progranulin-haploinsufficiency-exhibit-features-of-neuronal-ceroid-lipofuscinosis
#11
Michael E Ward, Robert Chen, Hsin-Yi Huang, Connor Ludwig, Maria Telpoukhovskaia, Ali Taubes, Helene Boudin, Sakura S Minami, Meredith Reichert, Philipp Albrecht, Jeffrey M Gelfand, Andres Cruz-Herranz, Christian Cordano, Marcel V Alavi, Shannon Leslie, William W Seeley, Bruce L Miller, Eileen Bigio, Marek-Marsel Mesulam, Matthew S Bogyo, Ian R Mackenzie, John F Staropoli, Susan L Cotman, Eric J Huang, Li Gan, Ari J Green
Heterozygous mutations in the GRN gene lead to progranulin (PGRN) haploinsufficiency and cause frontotemporal dementia (FTD), a neurodegenerative syndrome of older adults. Homozygous GRN mutations, on the other hand, lead to complete PGRN loss and cause neuronal ceroid lipofuscinosis (NCL), a lysosomal storage disease usually seen in children. Given that the predominant clinical and pathological features of FTD and NCL are distinct, it is controversial whether the disease mechanisms associated with complete and partial PGRN loss are similar or distinct...
April 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28403175/altered-cortical-and-subcortical-connectivity-due-to-infrasound-administered-near-the-hearing-threshold-evidence-from-fmri
#12
Markus Weichenberger, Martin Bauer, Robert Kühler, Johannes Hensel, Caroline Garcia Forlim, Albrecht Ihlenfeld, Bernd Ittermann, Jürgen Gallinat, Christian Koch, Simone Kühn
In the present study, the brain's response towards near- and supra-threshold infrasound (IS) stimulation (sound frequency < 20 Hz) was investigated under resting-state fMRI conditions. The study involved two consecutive sessions. In the first session, 14 healthy participants underwent a hearing threshold-as well as a categorical loudness scaling measurement in which the individual loudness perception for IS was assessed across different sound pressure levels (SPL). In the second session, these participants underwent three resting-state acquisitions, one without auditory stimulation (no-tone), one with a monaurally presented 12-Hz IS tone (near-threshold) and one with a similar tone above the individual hearing threshold corresponding to a 'medium loud' hearing sensation (supra-threshold)...
2017: PloS One
https://www.readbyqxmd.com/read/28332927/leptospira-spp-in-small-mammals-from-areas-with-low-and-high-human-hantavirus-incidences-in-south-west-germany
#13
Anna Obiegala, Christoph Albrecht, Maysaa Dafalla, Stephan Drewes, Carolin Oltersdorf, Hendrik Turni, Christian Imholt, Jens Jacob, Christiane Wagner-Wiening, Rainer G Ulrich, Martin Pfeffer
INTRODUCTION: Leptospirosis is caused by Leptospira spp. and is considered the most widespread zoonotic disease worldwide. It mimics nephropathia epidemica in humans, a disease mainly caused by Puumala hantavirus (PUUV). Small mammals are reservoirs for Leptospira spp. and PUUV. Seewis virus (SWSV) is a shrew-borne hantavirus with unknown pathogenicity. The objective of this study was to estimate the prevalence for Leptospira spp. and the frequency of Leptospira-hantavirus co-infections in small mammals collected at locations with high and low incidences in humans...
May 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28290203/symbiotic-interplay-of-fungi-algae-and-bacteria-within-the-lung-lichen-lobaria-pulmonaria-l-hoffm-as-assessed-by-state-of-the-art-metaproteomics
#14
Christine Eymann, Christian Lassek, Uwe Wegner, Jörg Bernhardt, Ole Arno Fritsch, Stephan Fuchs, Andreas Otto, Dirk Albrecht, Ulf Schiefelbein, Tomislav Cernava, Ines Aschenbrenner, Gabriele Berg, Martin Grube, Katharina Riedel
Lichens are recognized by macroscopic structures formed by a heterotrophic fungus, the mycobiont, which hosts internal autotrophic photosynthetic algal and/or cyanobacterial partners, referred to as the photobiont. We analyzed the structure and functionality of the entire lung lichen Lobaria pulmonaria L. Hoffm. collected from two different sites by state-of-the-art metaproteomics. In addition to the green algae and the ascomycetous fungus, a lichenicolous fungus as well as a complex prokaryotic community (different from the cyanobacteria) was found, the latter dominated by methanotrophic Rhizobiales...
May 4, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28264699/recent-range-expansion-of-an-intermediate-host-for-animal-schistosome-parasites-in-the-indo-australian-archipelago-phylogeography-of-the-freshwater-gastropod-indoplanorbis-exustus-in-south-and-southeast-asia
#15
Pauline Gauffre-Autelin, Thomas von Rintelen, Björn Stelbrink, Christian Albrecht
BACKGROUND: The planorbid snail Indoplanorbis exustus is the sole intermediate host for the Schistosoma indicum species group, trematode parasites responsible for cattle schistosomiasis and human cercarial dermatitis. This freshwater snail is widely distributed in Southern Asia, ranging from Iran to China eastwards including India and from the southeastern Himalayas to Southeast Asia southwards. The veterinary and medical importance of this snail explains the interest in understanding its geographical distribution patterns and evolutionary history...
March 6, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28238998/factors-associated-with-contraceptive-use-among-women-of-reproductive-age-in-rural-districts-of-burkina-faso
#16
Joseph K Wulifan, Jacob Mazalale, Albrecht Jahn, Hervé Hien, Patrick Christian Ilboudo, Nicolas Meda, Paul Jacob Robyn, Saidou Hamadou, Ousmane Haidara, Manuela De Allegri
Given the current low contraceptive use and corresponding high levels of unwanted pregnancies leading to induced abortions and poor maternal health outcomes among rural populations, a detailed understanding of the factors that limit contraceptive use is essential. Our study investigated household and health facility factors that influence contraceptive use decisions among rural women in rural Burkina Faso. We collected data on fertile non-pregnant women in 24 rural districts in 2014. Of 8,657 women, 1,098 used a modern contraceptive...
2017: Journal of Health Care for the Poor and Underserved
https://www.readbyqxmd.com/read/28223354/il-1%C3%AE-induced-and-p38-mapk-dependent-activation-of-the-mitogen-activated-protein-kinase-activated-protein-kinase-2-mk2-in-hepatocytes-signal-transduction-with-robust-and-concentration-independent-signal-amplification
#17
Andreas Kulawik, Raphael Engesser, Christian Ehlting, Andreas Raue, Ute Albrecht, Bettina Hahn, Wolf-Dieter Lehmann, Matthias Gaestel, Ursula Klingmüller, Dieter Häussinger, Jens Timmer, Johannes G Bode
The IL-1β induced activation of the p38(MAPK)/MAPK-activated protein kinase 2 (MK2) pathway in hepatocytes is important for control of the acute phase response and regulation of liver regeneration. Many aspects of the regulatory relevance of this pathway have been investigated in immune cells in the context of inflammation. However, very little is known about concentration-dependent activation kinetics and signal propagation in hepatocytes and the role of MK2. We established a mathematical model for IL-1β-induced activation of the p38(MAPK)/MK2 pathway in hepatocytes that was calibrated to quantitative data on time- and IL-1β concentration-dependent phosphorylation of p38(MAPK) and MK2 in primary mouse hepatocytes...
April 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28205573/extracellular-protonation-modulates-cell-cell-interaction-mechanics-and-tissue-invasion-in-human-melanoma-cells
#18
Verena Hofschröer, Kevin Alexander Koch, Florian Timo Ludwig, Peter Friedl, Hans Oberleithner, Christian Stock, Albrecht Schwab
Detachment of cells from the primary tumour precedes metastatic progression by facilitating cell release into the tissue. Solid tumours exhibit altered pH homeostasis with extracellular acidification. In human melanoma, the Na(+)/H(+) exchanger NHE1 is an important modifier of the tumour nanoenvironment. Here we tested the modulation of cell-cell-adhesion by extracellular pH and NHE1. MV3 tumour spheroids embedded in a collagen matrix unravelled the efficacy of cell-cell contact loosening and 3D emigration into an environment mimicking physiological confinement...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28192388/degradable-starch-microspheres-transcatheter-arterial-chemoembolization-dsm-tace-in-intrahepatic-cholangiocellular-carcinoma-icc-results-from-a-national-multi-center-study-on-safety-and-efficacy
#19
MULTICENTER STUDY
Andreas Schicho, Philippe L Pereira, Manfred Pützler, Katharina Michalik, Thomas Albrecht, Claus Nolte-Ernsting, Christian Stroszczynski, Philipp Wiggermann
BACKGROUND The aim of this study was to evaluate the safety and efficacy of DSM (degradable starch microspheres) as an embolic agent in transarterial chemoembolization in the treatment of intrahepatic cholangiocellular carcinoma (ICC). MATERIAL AND METHODS This was a national, multi-center observational cohort study on the safety and efficacy of DSM-TACE using mitomycin, gemcitabine, cisplatin, doxorubicin, and carboplatin in palliative treatment of ICC. Recruitment period for the study was from January 2010 to June 2014...
February 13, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28187543/new-data-on-the-taxonomy-ecology-and-conservation-of-the-rediscovered-i-louisea-i-i-edeaensis-i-bott-1969-brachyura-potamoidea-potamonautidae-an-endangered-freshwater-crab-from-cameroon
#20
Pierre A Mvogo Ndongo, Thomas VON Rintelen, Christoph D Schubart, Christian Albrecht, Joseph L Tamesse, Neil Cumberlidge
The rare and endangered Cameroonian potamonautid freshwater crab Louisea edeaensis (Bott, 1969) was recently rediscovered during a biological inventory of the freshwater decapods of southern Cameroon. The previous record dated back more than 100 years. The new specimens allow an updated diagnosis of the species based on comparisons of important taxonomic characters. Photographs of the carapace, gonopods, third maxillipeds, and chelipeds of the largest adult male specimen from Lake Ossa, Cameroon are provided, as are the first photographs of living specimens...
February 9, 2017: Zootaxa
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