Cohesins, meiosis and primary ovarian insufficiency. Gènes de méiose et insuffisance ovarienne prématuréePrimary ovarian insufficiency (POI) is a disorder resulting in the loss of ovarian function. It is a multifactorial condition characterized by amenorrhea, estradiol deficiency and high FSH levels...
Define primary oocyte. primary oocyte synonyms, primary oocyte pronunciation, primary oocyte translation, English dictionary definition of primary oocyte. n. A diploid cell from which an egg or ovum develops by meiosis. A primary oocyte divides to produc
This phase of meiosis is completed only to the diplotene stage. Chapter 11: Dynamics of ovarian function: folliculogenesis, oogenesis, and ovulation On the 4th day there were severe degeneration at primary oocytes. In addition decomposition at nucleoplasm was also detected (Fig. Histological Changes...
We use essential cookies to make sure the site can function. We also use optional cookies for advertising, personalisation of content, usage analysis, and social media. By accepting optional cookies, you consent to the processing of your personal data - including transfers to third parties. Some...
of pre-Sertoli cells during the sex determination period, which preceded the initiation of gonadal sex differentiation. The expression ofDmrt1was induced in genetic female embryonic gonads that were masculinized by aromatase inhibitor treatment. Loss- and gain-of-function analyses provided the solid ...
More recently, a Y chromosomal gene coding for a zinc finger protein (termed ZFY) was isolated from the testis determining region of the human and mouse Y chromosome. Due to its location and possible function as a transcription factor ZFY was considered a candidate of TDF. ZFY, however, has...
DNA lesions have been shown to interfere with transcription and replication, and so lead to loss of cell function and death. In mammals, there is a progressive decline of function in many different tissues with increasing age. Deterioration of central nervous system functions appears to be a ...
Spermatogenic failure is one of the leading causes of male infertility and its genetic etiology has not yet been fully understood. The study screened a cohort of patients (n = 167) with primary male infertility in contrast to 210 normally fertile m
Name the stages of egg maturation and explain how we can distinguish them. Why is it important that DNA replication takes place before cell division? What is the function of the spindle fibers during mitosis? In the process of meiosis, how many viable...
We examined the disassembly and reformation of the Golgi apparatus as a function of the cycle of the seminiferous epithelium in adult rats during stages XIII and XIV, i. e., just prior to and during meiosis I and II. Serial section analysis of primary spermatocytes at metaphase I demonstrated...