primary oocyte


primary oocyte
The enlarging ovum before maturity is reached, as opposed to the secondary oocyte or polar body.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • primary oocyte — n a diploid oocyte that has not yet undergone meiosis * * * an oocyte that has begun but not completed the first maturation division; it is derived from an oogonium by differentiation near the time of birth …   Medical dictionary

  • primary oocyte — primary oocyte. См. первичный ооцит. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Oocyte — Stripped human oocyte; granulosa cells that had surrounded this oocyte have been removed. Gray s subject #3 38 …   Wikipedia

  • oocyte — The egg mother cell; it undergoes two meiotic divisions (oogenesis) to form the egg cell. The primary oocyte refers to the state before completion of the first meiotic division; the secondary oocyte after completion of the first meiotic division …   Glossary of Biotechnology

  • oocyte — The immature ovum. SYN: ovocyte. [G. oon, egg, + kytos, a hollow (cell)] primary o. an o. during its growth phase and before it completes the first maturation division. secondary o. an o. in which the first meiotic division i …   Medical dictionary

  • oocyte — n. a cell in the ovary that undergoes meiosis to form an ovum. Primary oocytes develop from oogonia in the fetal ovary as they enter the early stages of meiosis. Only a fraction of the primary oocytes survive until puberty, and even fewer will be …   The new mediacal dictionary

  • oocyte donation — the transfer of oocytes from one woman to another. Possible recipients include women with primary or secondary ovarian failure or severe genetic disorders, and women in whom ovulation has been suppressed as an incidental result of drug treatment… …   Medical dictionary

  • primary ovarian follicles — growing ovarian follicles that are partially mature, each comprising an immature oocyte and the specialized epithelial cells (follicle cells) that surround it …   Medical dictionary

  • oocyte donation — egg donation the transfer of secondary oocytes from one woman to another. Possible recipients include women with primary or secondary ovarian failure or severe genetic disorders, and women in whom ovulation has been suppressed as an incidental… …   The new mediacal dictionary

  • secondary oocyte — n an oocyte that is produced by division of a primary oocyte in the first meiotic division * * * an oocyte in the period between the first and second maturation division; it is derived from a primary oocyte shortly before ovulation by a division… …   Medical dictionary


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