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These tumor-associated antigens (Neu5Acα2,6-Tn, and NeuGcα2,6-Tn) are also bound. [10] CLEC10A has also been shown to bind GalNAc in the teichoic acid of the Staphylococcus aureus cell wall and the surface of parasites. [11] [12] CLEC10A is expressed by dendritic cells that differentiate from monocytes recruited to inflammatory environments. [13]
A tumor marker is a biomarker that can be used to indicate the presence of cancer or the behavior of cancers (measure progression or response to therapy).
An oocyte is produced in a female fetus in the ovary during female gametogenesis. The female germ cells produce a primordial germ cell (PGC), which then undergoes mitosis, forming oogonia. During oogenesis, the oogonia become primary oocytes. An oocyte is a form of genetic material that can be collected for cryoconservation.
Oogenesis starts with the process of developing primary oocytes, which occurs via the transformation of oogonia into primary [oocyte]s, a process called oocytogenesis. [11] From one single oogonium, only one mature oocyte will rise, with 3 other cells called polar bodies. Oocytogenesis is complete either before or shortly after birth.
The primary oocyte is defined by its process of ootidogenesis, which is meiosis. [2] It has duplicated its DNA, so that each chromosome has two chromatids, i.e. 92 chromatids all in all (4C). When meiosis I is completed, one secondary oocyte and one polar body is created. Primary oocytes have been created in late fetal life.
In oocytes, a unique quality control system has evolved that eliminates by apoptosis those oocytes in which chromosomes do not align correctly, or in which chromosomes cannot be repaired. [16] This monitoring system is conserved from fruit flies and nematodes to humans, and central to this system is the p53 protein family and, in vertebrates in ...
Ovarian stem cells are oocytes formed in ovarian follicle before birth in female mammals. They do not form post-natally , and are depleted throughout reproductive life. [ 1 ] In humans it is estimated that 500,000–1,000,000 primordial follicles are present at birth, decreasing rapidly with age until roughly age 51 when ovulation stops ...
Eventually, the oogonia will either degenerate or further differentiate into primary oocytes through asymmetric division. Asymmetric division is a process of mitosis in which one oogonium divides unequally to produce one daughter cell that will eventually become an oocyte through the process of oogenesis , and one daughter cell that is an ...
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