Light micrograph of a single,mature human ovum (egg),showing the central oocyte surrounded by a layer of follicular cells,the corona radiata. Mature human ova develop in the ovaries from primordial follicles which,although formed between the 4th & 7th month of foetal development,remain dormant until sexual maturity. In each ovarian cycle up to 20 primordial follicle are activated to form primary follicles; normally only one will reach full maturity (a graafian follicle) and be released at ovulation,when the mature follice ruptures and releases the ovum to be received into the fallopian tube | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Edelmann |
Bildgröße: | 4847 px × 3628 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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