Results 81 to 90 of about 5,667,091 (281)

Oogenesis and germinal bed morphology of the brown anole (A. sagrei)

Developmental Dynamics, EarlyView.
Abstract Background The brown anole is a model species of the genus Anolis, a squamate (encompassing lizards and snakes) group widely studied in evolutionary, behavioral, and developmental biology. Full genome annotation, the establishment of gene editing techniques, and comprehensive description of reproductive tract morphology and embryogenesis in ...
Bonnie K. Kircher, Antonia Weberling, Erin J. Vance, Natalia A. Shylo, Katherine Starr, Zoe B. Griffin, Hannah Wilson, Melainia McClain, Florian Hollfelder, Suzannah A. Williams, Thomas J. Sanger, Richard R. Behringer, Paul A. Trainor   +12 more
wiley   +1 more source

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

DETECTION OF HUMAN MEIOTIC AND SPERMATOGENETIC ANOMALIES USING LIGHT, ELECTRON AND FLUORESCENCE MICROSCOPY

Андрология и генитальная хирургия, 2018
Introduction. Infertility is diagnosed in 10–15 % of couples wishing to have children. In about half cases, the cause is a disorders of male fertility.
O. L. Kolomiets, M. A. Lelekova, A. A. Kashintsova, L. F. Kurilo, E. E. Bragina, V. B. Chernykh, M. Yu. Gabliya, I. V. Vinogradov, I. I. Vityazeva, S. V. Bogolyubov, V. E. Spangenberg   +10 more
doaj   +1 more source

Meiotic Behavior of Wild, Synthetic and Cultivated Wheats

CYTOLOGIA, 2010
Wild relatives of bread wheat are potential sources of valuable genetic materials for wheat improvement. Genomic relationship and cross-ability between plant species can be deduced from chromosomal structure, size and behavior during meiotic division.
Mahbube Arabbeigi, Ahmad Arzani, Ghodratollah Saeidi   +2 more
openaire   +2 more sources

Bioengineered Isoflavone–Probiotic Functional Foods for Sustainable Modulation of Metabolic and Reproductive Health in PCOS

Food Bioengineering, EarlyView.
Synergistic isoflavone‐probiotic action modulated metabolic, microbial and ovarian pathway ABSTRACT Polycystic ovary syndrome (PCOS) is a prevalent metabolic–endocrine disorder characterized by insulin resistance, hyperandrogenism, chronic inflammation, oxidative stress, and ovarian dysfunction, with growing evidence implicating gut microbiota ...
Jeyavelkumaran Renukadevi, Panneerselvam Sneha, Dhanapal Saravanan Mridula, Keerthivasan Nimithasree, Valliappan Sanjay   +4 more
wiley   +1 more source

A dynamic meiotic SUN belt includes the zygotene-stage telomere bouquet and is disrupted in chromosome segregation mutants of maize (Zea mays L.).

Frontiers in Plant Science, 2014
The nuclear envelope (NE) plays an essential role in meiotic telomere behavior and links the cytoplasm and nucleoplasm during homologous chromosome pairing and recombination in many eukaryotic species.
Shaun Patrick Murphy, Hardeep K Gumber, YunYun eMao, Hank W Bass, Hank W Bass   +4 more
doaj   +1 more source

The mitochondrial DNA copy number and ovary‐related reproductive disorders: A bidirectional two‐sample Mendelian randomization study

International Journal of Gynecology &Obstetrics, Volume 169, Issue 1, Page 112-120, April 2025.
Abstract Objective In the present study, a bidirectional two‐sample Mendelian randomization approach was utilized to explore potential causal relationships between mitochondrial DNA copy number (mtDNA‐CN) and ovary‐related reproductive disorders (ORRDs), including ovarian dysfunction, ovarian cyst, polycystic ovary syndrome (PCOS), premature ovarian ...
Ke Peng, Xiao Han, Congquan Wu, Qiaowen Lu, Shujun Gao   +4 more
wiley   +1 more source

Molecular Investigations on Angiogenesis and Oxidative Stress in Roe Deer (Capreolus capreolus) Bucks' Testes Throughout the Reproductive Cycle

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Animals with seasonal reproductive cycles, as the Roe deer (Capreolus capreolus), have developed mechanisms to synchronize reproduction with the environmental cycle in order to optimize reproductive success through melatonin. Angiogenesis and oxidative stress are key processes in spermatogenesis, contributing to testicular remodeling and ...
Ilaria Troisio, Domenico Ventrella, Bálint Lóránt Hausz, Mattia Cesauri, Niccolò Ian Vannetti, Maria Laura Bacci, Alberto Elmi, Augusta Zannoni   +7 more
wiley   +1 more source

Meiotic Behavior and Pollen Viability of Spondias mombin L.: Native Fruit Species of the Amazon

Floresta e Ambiente
Spondias mombin L. is a fruit species native to the Amazon with great marketing potential. The aim of this study was to examine the meiotic behavior and pollen viability of S. mombin.
Kelli Évelin Müller Zortéa, Ana Aparecida Bandini Rossi, Rosimeire Barboza Bispo, Vinícius Delgado da Rocha, Eulalia Soler Sobreira Hoogerheide   +4 more
doaj   +1 more source

Meiose e viabilidade polínica na família Araceae Meiosis and pollen viability in Araceae family

Acta Botânica Brasílica, 2005
O objetivo deste trabalho foi analisar a microsporogênese e a viabilidade dos grãos de pólen em 17 espécies de aráceas coletadas no Rio Grande do Sul, Brasil.
Maria Goreti Senna Corrêa, Judith Viégas, João Baptista da Silva, Paula Fernanda Vaz de Ávila, Gustavo Rossato Busato, Jaqueline Schneider Lemes   +5 more
doaj   +1 more source