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- W4300458003 abstract "ABSTRACT The left embryonic testis of the bird (4–8 days of incubation) was organ cultured in medium that contained 10% foetal calf serum. Under these conditions, the germinal epithelium (GE) of the 4-day gonad differentiates into an ovarian cortex and the male primordial germ cells (PGCs) complete a developmental sequence similar to normal oocytes, i.e. they divide mitotically, develop a Balbiani body, divide synchronously in groups of two, four, and eight germ cells, and some enter pre-leptotene. No medullary tissue develops in the 4-day explants. The pieces of 6-and 8-day gonad differentiate into true ovotestes in which the GE develops into a cortex and the medulla develops into seminiferous cords. The PGCs in the cortex differentiate as oocytes and those in the seminiferous cords differentiate as spermatogonia. The possibility that biologically active oestrogens are present in the growth medium is discussed." @default.
- W4300458003 created "2022-10-03" @default.
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- W4300458003 date "1974-06-01" @default.
- W4300458003 modified "2023-09-23" @default.
- W4300458003 title "‘Spontaneous’ sex reversal in organ cultures of the embryonic male gonad of the bird" @default.
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- W4300458003 doi "https://doi.org/10.1242/dev.31.3.611" @default.
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