Results 211 to 220 of about 487,985 (362)

Three cases of sperm immobility for intracytoplasmic sperm injection using testicular sperm

IJU Case Reports
Introduction Sperm immobility is a condition in which sperm are viable but not motile. We reported three patients with sperm immobility, who underwent testicular sperm extraction‐intracytoplasmic sperm injection.
Noboru Mimura, Teppei Takeshima, Shun Aoki, Tomoki Saito, Jurii Karibe, Yasushi Yumura   +5 more
doaj   +1 more source

Automated Sperm Morphology Analysis Based on Instance-Aware Part Segmentation [PDF]

arXiv
Traditional sperm morphology analysis is based on tedious manual annotation. Automated morphology analysis of a high number of sperm requires accurate segmentation of each sperm part and quantitative morphology evaluation. State-of-the-art instance-aware part segmentation networks follow a "detect-then-segment" paradigm.
arxiv  

Severity of effect considerations regarding the use of mutation as a toxicological endpoint for risk assessment: A report from the 8th International Workshop on Genotoxicity Testing (IWGT)

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Exposure levels without appreciable human health risk may be determined by dividing a point of departure on a dose–response curve (e.g., benchmark dose) by a composite adjustment factor (AF). An “effect severity” AF (ESAF) is employed in some regulatory contexts.
Barbara L. Parsons, Marc A. Beal, Kerry L. Dearfield, George R. Douglas, Min Gi, B. Bhaskar Gollapudi, Robert H. Heflich, Katsuyoshi Horibata, Michelle Kenyon, Alexandra S. Long, David P. Lovell, Anthony M. Lynch, Meagan B. Myers, Stefan Pfuhler, Alisa Vespa, Andreas Zeller, George E. Johnson, Paul A. White   +17 more
wiley   +1 more source

ON SOME FACTORS GOVERNING THE PERMEABILITY OF THE EGG MEMBRANE BY THE SPERM

, 1905
H. H. Newman
openalex   +2 more sources

Benchmark Response (BMR) Values for In Vivo Mutagenicity Endpoints

Environmental and Molecular Mutagenesis, EarlyView.
ABSTRACT The benchmark dose (BMD) approach constitutes the most effective and pragmatic strategy for the derivation of a point of departure (PoD) for comparative potency analysis, risk assessment, and regulatory decision‐making. There is considerable controversy regarding the most appropriate benchmark response (BMR) for genotoxicity endpoints.
Paul A. White, Guangchao Chen, Nikolai Chepelev, Madison A. Bell, Lauren R. Gallant, George E. Johnson, Andreas Zeller, Marc A. Beal, Alexandra S. Long   +8 more
wiley   +1 more source

The Effect of Testis Hormone on the Preservation of Sperm Life in the Vas Deferens of the Fowl [PDF]

, 1938
S. S. Munro
openalex   +1 more source

Length of Life of Sperms in the Wood-louse Armadillidium vulgare Latr [PDF]

, 1943
H. W. Howard
openalex   +1 more source

Stopping the Sperm [PDF]

BMJ, 1964
M. Matsukura, Jean-Louis Amiel, Mery Am, Georges Mathé   +3 more
openaire   +3 more sources

SPERM ACTIVATION AND AGGREGATION DURING FERTILIZATION IN SOME FISHES [PDF]

, 1959
Ryo Suzuki
openalex   +1 more source

Synthetic Biology‐Based Engineering Cells for Drug Delivery

Exploration, EarlyView.
Synthetic biology‐based therapeutic cells for drug delivery: Engineered cells effectively transport and release drugs through their intelligence and controllability, such as feedback pathways and external stimuli (e.g., light and ultrasound). The integration of nanotechnology, including nanoparticles, biofilms, and artificial cells, enhances ...
Wenzhe Yi, Shuangshuang Hu, Xindi Qian, Wenlu Yan, Yaping Li   +4 more
wiley   +1 more source