The role of the male gamete--the sperm cell--in the process of fertilization is to recognize, adhere to, and fuse with the female gamete. These highly specialized functions are expected to be controlled by activation of a unique set of genes. However, male gametic cells traditionally have ...
Regenerating worm tips and gamete-bearing segments were used for the analysis. A diploid chromosome number of 34 was found in well-spread metaphase plates of somatic cells. A pair of sex chromosomes (XY) with the Y considerably larger than the X was found in males. The size and shape of ...
- 《Cell》 被引量: 503发表: 2001年 Proteome analysis of separated male and female gametocytes reveals novel sex-specific Plasmodium biology. Gametocytes, the precursor cells of malaria-parasite gametes, circulate in the blood and are responsible for transmission from host to mosquito vector. The.....
80 cell nuclei per sample were scored for presence of X and Y chromosomes using fluorescent centromeric probes.Results: Sex chromosome aneuploidy, largely Y chromosome loss, was present in 63% of cases and 57% of controls, with the prevalence and degree of aneuploidy increasingly sharply and high...
The setting of male-specific epigenetic information is a complex process, which involves a major global re-organisation, as well as localized changes of the nucleus structure during the pre-meiotic, meiotic and post-meiotic stages of the male germ cell differentiation. Although it has long been ...
Although fertilization has been studied for more than a century, the cell surface proteins mediating the process are only now becoming known. Gamete intera... JT Patterson,WS Stone 被引量: 1071发表: 1952年 Sex-peptide is the molecular basis of the sperm effect in Drosophila melanogaster Mating...
(G.1) received 50mg/k/body weight and (G.2) received 100 mg/k/ body weight of ginger were dissolved in drinking water for 21 respectively days.This study aimed to evaluate the effect of gingeronSemen characteristics, sex hormones and the histology of the testes to show the spermatogenesis...
Animal germ cells produce PIWI-interacting RNAs (piRNAs), small silencing RNAs that suppress transposons and enable gamete maturation. Mammalian transposon... Li, Xin?Zhiguo,Roy, Christian?K.,X Dong,... - 《Molecular Cell》 被引量: 338发表: 2013年 MOV10L1 is necessary for protection of sper...
- 《Molecular Biology of the Cell》 被引量: 0发表: 2018年 Involvement of calcium signaling and the actin cytoskeleton in the membrane block to polyspermy in mouse eggs This study examines the effects of actin microfilament-disrupting drugs on events of fertilization, with emphasis on gamete ...
Moreover, tumor formation is specific to the male developmental pathway and not dependent on sex chromosome composition of the germ cell (XX vs. XY). Despite normal initiation of the male somatic pathway, mutant germ cells fail to differentiate as pro-spermatogonia and instead prematurely enter ...