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The zona radiata (ZR) is a non- cellular envelope over oolemma of teleost fish oocytes. The morphology of the ZR varies in different ovarian developmental stages and also among various fish species, which reflects adaptation to ecological conditions.
21 lut 2013 · The zona radiata (ZR) is a non- cellular envelope over oolemma of teleost fish oocytes. The morphology of the ZR varies in different ovarian developmental stages and also among various fish...
La zona radiativa è uno strato interno delle stelle dove l'energia è trasportata principalmente verso l'esterno per mezzo della radiazione e della conduzione termica, piuttosto che per convezione. [1]
13 wrz 2018 · The zona radiata (Zr) is located between the plasma membrane of the oocyte and the follicular cells (Fig. 2H). A fibrillar network surrounds stage I and II oocytes (2 C, F).
1 sty 2010 · The zona radiata (called as zona pellucid in mammals), is a porous structure located between oo- lemma and follicle cell epithelium in fish, has various functions. The zona radiata is an...
The thicker zona radiata can provide protection against the abrasion of the bottom (Guraya, 1986; Suzuki et al., 2000). Demersal eggs, which are often subjected to abrasive forces, generally develop thick envelopes with complex lamellae (Guraya, 1986; Suzuki et al., 2000).
1 lut 2012 · In this study, we investigate the formation of zona radiata, theca cell and granulosa cell in the teleost Pseudosctaena crocea. Four layers exist outside the oocyte plasamallea, i.e., theca cell layer, basal membrane, granulosa cell layer and zona radiata. Microvilli fully participates in the formation of zona radiata and granulosa cells. Three ...
