Results 11 to 20 of about 143,699 (111)

Shaping the genome of plants

open access: yeseLife, 2020
Fertilization of an egg cell by more than one sperm cell can produce viable progeny in a flowering plant.
Ajeet Chaudhary   +2 more
doaj   +1 more source

Polyspermy Block in the Central Cell During Double Fertilization of Arabidopsis thaliana

open access: yesFrontiers in Plant Science, 2021
During double fertilization in angiosperms, two male gametes (sperm cells), are released from a pollen tube into the receptive region between two female gametes; the egg cell and the central cell of the ovule.
Shiori Nagahara   +5 more
doaj   +1 more source

Study on the pattern of spermatogenesis during the breeding season of the Chinese soft-shelled turtle, Pelodiscus sinensis (Reptilia: Trionychidae)

open access: yesEndocrine Connections, 2023
The Chinese soft-shelled turtle, Pelodiscus sinensis (Reptilia: Trionychidae), is a typical seasonal breeding species, and its spermatogenesis pattern is complex. In this study, the process of sperm cell development was studied using histology.
Yu-Fei Yang   +6 more
doaj   +1 more source

Prominin‐1 expression in the testis/epididymis and fertility

open access: yesReproductive Medicine and Biology, 2023
The contribution of Prominin‐1 (aka CD133) to male fertility has recently been (re)investigated, with contradictory results. Early findings, essential for deciphering its role, have unfortunately been neglected.
Christine A. Fargeas   +2 more
doaj   +1 more source

Heparin and Progesterone Exert Synergistic Effects to Improve the In-Vitro Fertilization Rate of Bovine Sperm Bound to Oviduct Cell Aggregates from the Isthmus

open access: yesVeterinary Sciences, 2022
After the copulation process, some sperm start the long journey with an ultimate goal of fertilizing the oocyte. Inside the oviduct, sperm are stored, waiting for the ovulated oocyte where they bind to the apical surface of the oviduct cells, which in ...
Mohamed M. M. El-Sokary   +2 more
doaj   +1 more source

Use of FTA® classic cards for epigenetic analysis of sperm DNA

open access: yesBioTechniques, 2018
FTA® technologies provide the most reliable method for DNA extraction. Although FTA technologies have been widely used for genetic analysis, there is no literature on their use for epigenetic analysis yet.
Olga Serra   +4 more
doaj   +1 more source

Isolating Sperm from Cell Mixtures Using Magnetic Beads Coupled with an Anti-PH-20 Antibody for Forensic DNA Analysis. [PDF]

open access: yesPLoS ONE, 2016
Vaginal swabs taken in rape cases usually contain epithelial cells from the victim and sperm from the assailant and forensic DNA analysis requires separation of sperm from these cell mixtures.
Xing-Chun Zhao   +5 more
doaj   +1 more source

Cryopreservation of Roughscale Sole (Clidoderma asperrimum) Sperm: Effects of Cryoprotectant, Diluent, Dilution Ratio, and Thawing Temperature

open access: yesAnimals, 2022
The roughscale sole, Clidoderma asperrimum is categorized as an endangered species. Sperm freezing is essential for preserving gametes. This study examined the CPA concentration, diluent, dilution ratio, and thawing temperature to design a sperm ...
Irfan Zidni   +7 more
doaj   +1 more source

Sperm dynamics in spiders (Araneae): ultrastructural analysis of the sperm activation process in the garden spider Argiope bruennichi (Scopoli, 1772). [PDF]

open access: yesPLoS ONE, 2013
Storage of sperm inside the female genital tract is an integral phase of reproduction in many animal species. The sperm storage site constitutes the arena for sperm activation, sperm competition and female sperm choice. Consequently, to understand animal
Oliver Vöcking   +2 more
doaj   +1 more source

Hydrogen peroxide has adverse effects on human sperm quality parameters, induces apoptosis, and reduces survival

open access: yesJournal of Human Reproductive Sciences, 2021
Background: One of the causes of male fertility disorders is the exposure of oxidative stress on the human sperm. Understanding the mechanism of disturbance is important to develop a better treatment for infertile or subfertile patients. Aims: The aim of
Dwi Ari Pujianto   +3 more
doaj   +1 more source

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