Results 71 to 80 of about 136,516 (311)
Role of Sex Hormone Receptors in Ovulation
Taiwanese Journal of Obstetrics & Gynecology, 2005 Sex hormones including progestins, androgens, and estrogens produced de novo from cholesterol within the ovary play important roles in the growth and differentiation of reproductive tissues and in the maintenance of fertility.
Peng-Hui Wang
doaj +1 more source
Frontiers in Endocrinology, 2020 Objective: To evaluate the effect of human chorionic gonadotropin (hCG) trigger ovulation on pregnancy outcomes in natural IUI cycles with donor sperm.Methods: This retrospective cohort study included 5,610 first-natural IUI cycles with donor sperm in ...
Ji-Peng Wan +19 more
doaj +1 more source
Frustration-induced inherent instability and growth oscillations in pollen tubes [PDF]
, 2012 In a seed plant a pollen tube is a vessel that transports male gamete cells to an ovule to achieve fertilization. It consists of one elongated cell, which exhibits growth oscillations, until it bursts completing its function. Up till now, the mechanism behind the periodic character of the growth has not been fully understood.
arxiv +1 more source
Fishes, 2019 Wild-caught hāpuku (Polyprion oxygeneios) spawn readily in captivity, but although first filial (F1) hāpuku complete vitellogenesis, females fail to undergo oocyte maturation and spawn or produce poor quality eggs.
Matthew J. Wylie +6 more
doaj +1 more source
Biology of Reproduction, 2004 Belclare and Cambridge are prolific sheep breeds, the origins of which involved selecting ewes with exceptionally high litter size records from commercial flocks. The variation in ovulation rate in both breeds is consistent with segregation of a gene (or
J. P. Hanrahan +6 more
semanticscholar +1 more source
The Known and Unknown About Female Reproductive Tract Mucus Rheological Properties
BioEssays, EarlyView.Mucus viscosity changes as spermatozoa travel through the female reproductive tract to the egg in humans, bovines, mice, and other mammals. These changes may aid in spermatozoa navigation. However, limited information is available on the viscoelastic properties of female reproductive tract mucus, and consistent measurement techniques are lacking ...
Luke Achinger +19 more
wiley +1 more source
Ciência Rural, 1995 A gonadotrofina coriônica equina (eCG) foi purificada e caracterizada com respeito ao grau de pureza e atividade biológica. A pureza de quatro preparações foi determinada por eletroforese e a atividade biológica pelo incremento do peso ovariano de ratas ...
José Antonio Guimarães Aleixo +4 more
doaj +1 more source
The Octopamine Receptor Octβ2R Regulates Ovulation in Drosophila melanogaster
PLoS ONE, 2014 Oviposition is induced upon mating in most insects. Ovulation is a primary step in oviposition, representing an important target to control insect pests and vectors, but limited information is available on the underlying mechanism.
Junghwa Lim +6 more
semanticscholar +1 more source
Drug Testing and Analysis, EarlyView.In highly trained female athletes, haematological and inflammatory biomarkers were found to be independent of menstrual cycle phase, but oral contraceptive use increased transferrin, reticulocyte count and triglycerides and decreased interleukin‐6.
Katia Collomp +12 more
wiley +1 more source
Dissection of the Ovulatory Process Using ex vivo Approaches
Frontiers in Cell and Developmental Biology, 2020 Ovulation is a unique physiological phenomenon that is essential for sexual reproduction. It refers to the entire process of ovarian follicle responses to hormonal stimulation resulting in the release of mature fertilization-competent oocytes from the ...
Alexander A. Tokmakov +2 more
doaj +1 more source