vesicular ovarian follicle

(redirected from secondary follicle)

follicle

 [fol´ĭ-k'l]
a sac or pouchlike depression or cavity. adj., adj follic´ular.
atretic ovarian follicle an involuted ovarian follicle.
dental follicle the structure within the substance of the jaws enclosing a tooth before its eruption; the dental sac and its contents.
gastric f's lymphoid masses in the gastric mucosa.
graafian follicle see graafian follicle.
hair follicle one of the tubular invaginations of the epidermis enclosing the hairs, and from which the hairs grow.
Diagram of a hair follicle showing layers of hair schematically. From Copstead, 1995.
lymph follicle (lymphatic follicle)
2. lymphatic nodule (def. 2).
Naboth's f's (nabothian f's) Naboth's cysts.
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 ovarian 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 f's
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 f's discrete cystlike units filled with a colloid substance rich in iodine; they constitute the lobules of the thyroid gland.
vesicular ovarian follicle graafian follicle.

ve·sic·u·lar o·var·i·an fol·li·cle

[TA]
a follicle in which the primary oocyte attains its full size and is surrounded by an extracellular glycoprotein layer (zona pellucida) that separates it from a peripheral layer of follicular cells permeated by one or more fluid-filled antra; the primary oocyte occupies the cumulus oophorus; the theca of the follicle develops into internal and external layers.

ve·sic·u·lar o·var·i·an fol·li·cle

(vĕ-sik'yū-lăr ō-var'ē-ăn fol'i-kĕl) [TA]
A follicle in which the oocyte attains its full size and is surrounded by an extracellular glycoprotein layer (zona pellucida) that separates it from a peripheral layer of follicular cells permeated by one or more fluid-filled antra; the theca of the follicle develops into internal and external layers.
Synonym(s): antral follicle, graafian follicle, secondary follicle.

Graaf,

Reijnier de, Dutch physiologist and histologist, 1641-1673.
graafian follicle - a follicle in which the oocyte attains its full size. Synonym(s): vesicular ovarian follicle
References in periodicals archive ?
The secondary follicle primordium can be observed from the fetal side of the body (Figure 1B); During the development of the fetus from day 65 to day 75, the secondary follicle primordium can be observed from the fetal side of the body, secondary follicles begin to occur (Figure 1C).
The immunolabelling intensity of GDF9 in stages of follicular development Parameter Control Vehicle (n=15) (n=15) Primordial follicle 18.86[+ or -]4.03 19.17[+ or -]3.22 (pixel) Primary follicle 33.10[+ or -]6.80 33.00[+ or -]5.97 (pixel) Secondary follicle 37.48[+ or -]5.91 38.46[+ or -]4.99 (pixel) Tertiary follicle 45.44[+ or -]5.81 45.18[+ or -]4.92 (pixel) Parameter PCOS p (n=15) value Primordial follicle 19.83[+ or -]5.511 0.775 (pixel) Primary follicle 25.72 (a)[+ or -]5.76 0.001 (pixel) Secondary follicle 32.76 (a)[+ or -]5.11 0.003 (pixel) Tertiary follicle 32.63 (a)[+ or -]9.17 0.001 (pixel) Values of represent mean [+ or -] standard deviation; (a) p<0.05 is significantly different; GDF9: growth differentiation factor 9; PCOS: Polycystic ovary syndrome TABLE 3.
In non-vitrified ovarian tissue, the percentages of primordial, primary and secondary follicle were 25.33%, 58.89% and 15.76%, respectively.
They were classified as follows [16]: primordial follicle (an oocyte surrounded by one layer of flattened granulosa cells), primary follicle (an oocyte surrounded by one layer of cuboidal granulosa cells), secondary follicle (diverse layers of cuboidal granulosa cells without antral space), tertiary follicle (diverse layers of cuboidal granulosa cells with antral space), and Graafian follicles (presence of cumulus and granulosa and theca cell layers).
Secondary follicle (FII) (an oocyte surrounded by more than one layer of cuboidal cells but with antrum andzonapellucida in between).
(2006) (12-32 [micro]m, 34-190 [micro]m and 530-1620 [micro]m, respectively); however, the variation found for the mean diameter of secondary follicle (114.3 [+ or -] 8.7 [micro]m and 135.1 [+ or -] 15.2 [micro]m) was smaller than that of the small pre-antral follicle (190-490 [micro]m), observed by these same authors.
When the cell layer around the ova multiplies (becomes multicellular), the follicle is classified as a secondary follicle. Secondary follicles are observed around d 70 of age.
Then, the H&E stained ovary samples were examined for histopathological evaluation using light microscopy, followed by counting primordial (PrF), primary (PF), and secondary follicle in each ovarian tissue.
(29) demonstrated that estrogen induced an increase in the ovarian theca-interstitial area, the secondary follicle population and expression of some developmental gene.
When the secondary follicle cohort following stimulation reaches 12 mm, pituitary suppression with GnRH antagonist is initiated to prevent premature secondary LH surge and continued until the trigger (9).
Mean primary, secondary and total primary plus secondary follicle density of male sheep was 3.2 [+ or -] 0.1, 12.1 [+ or -] 0.7 and 15.3 [+ or -] 0.7 and for female sheep was 3.6 [+ or -] 0.1, 13.8 [+ or -] 0.4 and 17.4 [+ or -] 0.4.
Secondary follicle growth and oocyte maturation by culture in alginate hydrogel following cryopreservation of the ovary or individual follicles.