Results 81 to 90 of about 1,544,426 (289)
The Anatomical Record, EarlyView.Abstract Stenopodidea represents one of the basal lineages within Pleocyemata, yet the male reproductive system (MRS) of this group remains poorly understood, with limited information available regarding its morphology and function. This study provides the first detailed description of the MRS in four stenopodidean shrimp species from two families ...
Caio Santos Nogueira +2 more
wiley +1 more source
Frontiers in Cell and Developmental Biology, 2020 In mammalian species, both the maturation promoting factor (MPF) and the mitogen-activated protein kinase (MAPK) cascade play critical roles in modulating oocyte meiotic cell-cycle progression. MPF is a critical heterodimer composed of CDK1 and cyclin B1.
Lan-Rui Cao, Jun-Chao Jiang, Heng-Yu Fan
doaj +1 more source
Signalling mechanisms of mammalian oocyte activation [PDF]
Human Reproduction Update, 2002 Intensive study over the past 10 years has resulted in major advances in our understanding of the signalling mechanisms required for the transformation of the oocyte into an embryo capable of developing into a new individual. This review focuses on the signal transduction events that occur subsequent to the initial sperm-oocyte plasma membrane ...
openaire +2 more sources
Molecular Mechanisms of Gonadotropin-Induced Oocyte Maturation
, 2004 In vitro maturation of oocytes is routinely utilized for the production of embryos for commercial as well as research purposes. The objectives of the research described in this dissertation were: 1) to examine the molecular mechanism involved in ...
Rodriguez, Karina Flores
core
Animal Research and One Health, EarlyView.This study delineates the early sex differentiation timeline in the northern snakehead (Channa argus). These findings provide a foundation for future sex‐control breeding in this economically important species. ABSTRACT The northern snakehead (Channa argus) is an economically important aquaculture species in China.
Chaonan Sun +6 more
wiley +1 more source
oscillations for oocyte activation
, 2015 Mammalian oocyte activation is mediated by cytosolic calcium (Ca2+) oscillations initiated upon delivery of a putative ‘sperm factor’ by the fertilizing sperm.
Sanders, Jessica R. +23 more
core +1 more source
, 2020 Oocyte activation induced by calcium oscillations is an important process in normal fertilization and subsequent embryogenesis. In the clinical-assisted reproduction, artificial oocyte activation (AOA) is an effective method to improve the clinical ...
Sun, T +9 more
core +1 more source
Follicle Stimulating Hormone in Cattle Breeding: Fundamentals, Innovations, and Scope
Animal Research and One Health, EarlyView.FSH is crucial in cattle reproduction, with exogenous administration enhancing breeding and embryo production. Recombinant FSH offers advantages over pituitary‐extracted variants, including fewer injections, reduced stress, and safer production. These innovations improve breeding efficiency, optimize reproductive outcomes, and contribute to sustainable
Muhammad Shahzad +7 more
wiley +1 more source
Exploring the role of mononuclear phagocytes in the epididymis
Asian Journal of Andrology, 2015 The onslaught of foreign antigens carried by spermatozoa into the epididymis, an organ that has not demonstrated immune privilege, a decade or more after the establishment of central immune tolerance presents a unique biological challenge.
Nicolas Da Silva, Tegan B Smith
doaj +1 more source
Ovulation Triggers Activation of Drosophila Oocytes
Developmental Biology, 2001 Drosophila melanogaster mature oocytes in ovaries are arrested at metaphase I of meiosis. Eggs that have reached the uterus have released this arrest. It was not known where in the female reproductive tract egg activation occurs and what triggers it. We investigated when and where the egg is activated in Drosophila in vivo and at what meiotic stage the
Heifetz, Yael +2 more
openaire +2 more sources