oogonium

santolla ovaries are of three main types: oogonia, oocytes in different stages of development and follicle cells.

A new species of Pythium with ornamented oogonia: morphology, taxonomy, ITS region of its rDNA, and its comparison with related species.

3B), along with formation of oogonia, previtellogenic oocytes, and vitellogenic oocytes in females, but without any mature ovules (Fig.

gariepinus showed growing follicle in all stages of development besides germ cells and remarkable number of oogonia along the germinal epithelium were detected.

The first peak of germ-cell death happens on embryonic days 13.5 to 15.5, when oogonia stop their mitosis and enter meiotic division.

(A) Female reproductive system of Scyphophorus acupunctatus formed by 2 ovaries (ov), germarium (g), vitellarium (v), oocyte (o), lateral oviduct (lo), common oviduct (co), spermatheca (s), and genital chamber (gc); (B) Distal part of the germarium (g) with bulky appearance possibly with trophocytes, prefollicular cells, and oogonia, terminal filament (tf), trachea (tr), tracheoles (trl); and (C) Approach to the onset of vitellarium with oocytes in development, germinal vesicle (gv), interfollicular tissue (tif), trachea (tr), and tracheoles (trl).

In this study, the beginning of the differentiation period with primordial oogonia and follicles was already observed at 16 gestational days.

In fetal human ovary cultures, the highly proliferative premeiotic oogonia ([TFAP2C.sup.+]) were reduced in number following analgesic exposure, similar to findings in the fetal testis.

Primary growth oocytes and oogonia, which served as the reserve fund of germ cells, occurred among mature oocytes (Fig.

Seminomatous GCTs are tumors which are made of undifferentiated germ cells which can histologically resemble early spermatogonia, oogonia, or even germ cells from developmental lineages.

In resting phase, the ovary showed nests of oogonia and immature oocytes in the stage I and II were occur (Figure 9a and 9b).

Production of oogonia and oospores of Leptolegnia chapmanii Seymour (Straminipila: Peronosporomycetes) in Aedes aegypti (L.) larvae at different temperatures.