primordial follicle

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Related to primordial follicle: Graafian follicle, ovulation, zona pellucida, primary oocyte

primordial follicle

An ovarian follicle consisting of the ovum enclosed in a single layer of cells.
See also: follicle


a sac or pouchlike depression or cavity.

atretic follicle
an involuted ovarian follicle.
conjunctival follicle
focal accumulations of hypertrophied lymphoid tissue in conjunctiva, indicative of an inflammatory reaction.
cystic follicle
ovarian follicle that has not ruptured, is grossly enlarged, may be multiple and on both ovaries. Caused by insufficient luteinizing hormone. Affected cows may be nymphomaniac in behavior, but most are anestrous and anovulatory. See also cystic ovarian degeneration.
dental follicle
the structure within the substance of the jaws enclosing a tooth before its eruption; the dental sac and its contents.
dominant follicle
in the ovary, hormones secreted by the largest follicle will cause others to regress.
gastric follicle
lymphoid masses in the gastric mucosa.
graafian follicle
a maturing ovarian follicle among whose cells fluid has begun to accumulate, leading to the formation of a single cavity and leaving the ovum located in the cumulus oophorus; called also vesicular ovarian follicle.
hair follicle
see hair follicle.
hemorrhagic follicle
see corpus hemorrhagicum.
lymph follicle, lymphatic f
1. a small collection of actively proliferating lymphocytes in the cortex of a lymph node.
2. a small collection of lymphoid tissue in the mucous membrane of the gastrointestinal tract; such collections may occur singly (solitary lymphatic follicle) or closely packed together (aggregated lymphatic follicles).
ovarian follicle
the ovum and its encasing cells, at any stage of its development.
primary ovarian follicle
an immature ovarian follicle consisting of an immature ovum and the few specialized epithelial cells surrounding it.
primordial follicle
an ovarian follicle consisting of an ovum enclosed by a single layer of cells.
sebaceous follicle
a hair follicle with a relatively large sebaceous gland, producing a relatively insignificant hair.
solitary follicle
1. areas of concentrated lymphatic tissue in the mucosa of the colon.
2. small lymph follicles scattered throughout the mucosa and submucosa of the small intestine. Called also solitary glands.
thyroid follicle
discrete cystlike units filled with a colloid substance, constituting the lobules of the thyroid gland.
vesicular ovarian follicle
graafian follicle.
wool follicle
site of origin of wool fiber.
References in periodicals archive ?
Cryopreservation of the mouse ovary inhibits the onset of primordial follicle development.
Regulation of ovarian primordial follicle assembly and development by estrogen and progesterone: Endocrine model of follicle assembly.
The idea of cryopreserving ovarian tissue is based on the finding that the ovarian cortex harbors primordial follicles that are more resistant to cryo-injury than are mature oocytes.
In rats, the formation of primordial follicles is completed by postnatal day three or four (31).
Although primordial follicles are more resistant, as there is no blood flow at the initial ischemia 66% of oocytes lose their viability (67); 4.
Ovarian tissue containing many primordial follicles was harvested and frozen before she underwent high-dose chemotherapy but after she had undergone a second-line conventional chemotherapy regimen.
Andrews, both in Scotland, report that ovarian volume correlates with the number of primordial follicles, the sites in ovaries where immature eggs reside.
All four chemical classes significantly decreased the number of ovarian primordial follicles by approximately 30-40%, an effect that could result in impaired reproduction.
A third laparoscopy performed at that time, which checked for anomalies, revealed two primordial follicles at the orthotopic site, indicating follicular viability outside the atrophic ovaries.
Any chemical that is circulating in the blood is circulating through those cells in the primordial follicles of the uterus.
At the end of a week, they used enzymes to digest everything but the ovary's primordial follicles, balls of support cells with an oocyte at the center.
The beginning of the development of primordial follicles and sensitivity of granulosa cells to FSH are regulated through AMH.