Definition, Betydelse & Anagram | Engelska ordet OOCYTE

Definition av OOCYTE

1. (biologi) äggcell

Exempel på hur man kan använda OOCYTE i en mening

• of which the expression has regulation effects in reproduction function (oocyte maturation, labor, and sperm motility) and cancer although additional research is required to further define the roles.
• In terms of insemination, ICSI needs only one sperm cell per oocyte, while IVF needs 50,000–100,000.
• In women, this event occurs at the end of the follicular phase, when the ovarian follicles rupture and release the secondary oocyte ovarian cells.
• The technique consists of taking a denucleated oocyte (egg cell) and implanting a donor nucleus from a somatic (body) cell.
• A Drosophila melanogaster oocyte develops in an egg chamber in close association with a set of cells called nurse cells.
• Because the entry of oocytes into meiosis is frequently referred to as oocyte maturation, this cytoplasmic factor was called maturation promoting factor (MPF).
• The two-cell blastomere state, present after the zygote first divides, is considered the earliest mitotic product of the fertilized oocyte.
• Cumulus oophorus is a cluster of cells (called cumulus cells) that surround the oocyte both in the ovarian follicle and after ovulation.
• The zona pellucida is a translucent matrix of cross-linked glycoprotein filaments that surrounds the mammalian oocyte and is 6.
• Cytochalasin B makes the cytoplasm of the oocytes more fluid and makes it possible to aspirate the nuclear genome of the oocyte within a small vesicle of plasma membrane into a micro-needle.
• Capacitation is the penultimate step in the maturation of mammalian spermatozoa and is required to render them competent to fertilize an oocyte.
• Clown loach reproduce in captivity only after hormonal stimulation of final oocyte maturation and ovulation.
• A granulosa cell or follicular cell is a somatic cell of the sex cord that is closely associated with the developing female gamete (called an oocyte or egg) in the ovary of mammals.
• Controlled ovarian hyperstimulation, which is generally part of in vitro fertilization, and the aim is generally to develop multiple follicles (optimally between 11 and 14 antral follicles measuring 2–8 mm in diameter), followed by transvaginal oocyte retrieval, co-incubation, followed by embryo transfer of a maximum of two embryos at a time.
• Materials used in this procedure are a microscope, a holding pipette (small vacuum) to keep the oocyte in place, and a micropipette (hair-thin needle) capable of extracting the nucleus of a cell using a vacuum.
• Embryos for PGD are obtained from IVF procedures in which the oocyte is artificially fertilised by sperm.
• The egg donor thus has the same risk of complications from IVF as an autologous IVF patient would, such as bleeding from the oocyte recovery procedure and reactions to the hormones used to induce hyperovulation (producing more than one egg), including ovarian hyperstimulation syndrome (OHSS) and, rarely, liver failure.
• For example, in the case of embryonic Drosophila development, the genes nanos and bicoid are asymmetrically expressed in the oocyte because maternal cells deposit messenger RNA (mRNA) for these genes in the poles of the egg before it is laid.
• At puberty, clutches of follicles begin folliculogenesis, entering a growth pattern that ends in ovulation (the process where the oocyte leaves the follicle) or in atresia (death of the follicle's granulosa cells).
• In respect to invertebrates, nurse cells are polytenic germline cells that contribute to the development of the oocyte, producing multiple nuclei.

Förberedelsen av sidan tog: 201,63 ms.