The fine structure of oogonia and oocytes in the rhesus monkey (Macaca mulatta)

Quantification of healthy and atretic germ cells and follicles in the developing and post-natal ovary of the South American plains vizcacha, Lagostomus maximus: evidence of continuous rise of the germinal reserve

“…In the human ovary, low levels of apoptosis are observed during oogonia mitotic proliferation (early gestation) due to BCL2 expression in proliferating cells (Vaskivuo et al 2001, Albamonte et al 2008. At mid-gestation (weeks 18-20), when oocytes are progressing through prophase I and primordial follicle formation stages, anti-apoptotic BCL2 stops expressing and the pro-apoptotic BAX gene seems to be responsible for a remarkable increase in apoptosis leading to a final cumulative 85% loss at birth (Baker 1963, Baker & Franchi 1967, Albamonte et al 2008. We found a very low level of apoptosis (0.11%) in the early-developing ovaries of L. maximus supported by BCL2 expression in proliferating oogonia .…”

“…By the time it was accepted that mammals are born with a finite, non-renewable oocyte pool, studies in the human ovary had established another characteristic trait of mammalian oogenesis, the existence of constitutive massive germ cell death through cell attrition in foetal life and follicular atresia in the ovary in adulthood (Baker 1963, Baker & Franchi 1967. After colonising the genital ridges during early foetal life, human PGCs actively proliferate to produce by gestation week 20 around 7!10 6 primary oocytes.…”

Germ cell development in female pouch young of the tammar wallaby (Macropus eugenii)

“…When marsupial development is regarded as the period from conception to pouch exit, to include both intrauterine and extrauterine 'gestation' (Sharman, 1976), the timing of various events in germ cell development in the tammar are more usefully compared with those of eutherians. Viewed in this way, the gestation period of the tammar (excluding embryonic diapause) and man are similar, and the timing of major events in the two species, in weeks post coitum, are as follows (human values in parentheses from Baker & Franchi, 1967;Jost, 1971) …”

Modifications ultrastructurales des cellules germinales femelles au cours de la prophase méiotique chez le rat : étude particulière des membranes après cryofracture

“…, la souris (Odor et Blandau, 1969 ;Wassarman et Josefowicz, 1978), le hamster (Weakley, 1967), le lapin (Gondos et Zamboni, 1969), l'homme (Stegner et Wartenberg, 1963 ; Franchi, 1967), d'autres mammifères (Zamboni, 1972 ;Gondos, 1978) et les insectes (Palevody, 1973 ;Rasmussen, 1976 Echeverria, 1976 ;Tsuda, 1965 ;Weakley, 1967 ;Baker et Franchi, 1967.…”

“…Le complexe synaptinémai a également fait l'objet de nombreuses descriptions ultrastructurales au cours des stades leptotène, zygotène et pachytène (Moens, 1969(Moens, , 1973Stockert et al, 1970 ;Comings et Okada, 1971 ;Esponda et Gimenez-Martin, 1972 ;Schleiermacher et Schmidt, 1973 ;Stack, 1973 ;Chevaillier, 1974 ;Rasmussen, 1976 ;Von Wettstein, 1977 Franchi, 1972 ;Bruslé, 1972 ; (Sotelo, 1959 ;Franchi et Mandl, 1962), ni chez la souris (Tsuda, 1965) Schuchner, 1975 ;chat : Morato, 1965 ;champignons : Stockert et al, 1970 ;plantes : La Cour, 1975 ;souris et cailie : Mirre et Stahl, 1976homme : Très, 1975 ;Stahl et al, 1978Stahl et al, , 1980Hartung et al, 1979 ;Mirre et al, 1980 (Curgy, 1972 ;André, 1962 ;De Martino et al, 1979). Les quelques études des mitochondries réalisées chez la femelle (lapin : Anderson, 1968 ;Anderson et al, 1970) Connell, 1975Connell, , 1976Connell, , 1978rat : Nagano, 1980) …”