1. Johnson J, Bagley J, Skaznik-Wikiel M, et al. (2005) Oocyte generation in adult mammalian ovaries by putative germ cells in bone marrow and peripheral blood. Cell 29:303–315
2. Baker TG (1963) A quantitative and cytological study of germ cells in human ovaries. Proc R Soc Lond B Biol Sci 158:417–433
3. Franchi LL, Baker TG (1973) In: Hafez ESS, Evens TN (eds) Human reproduction, conception and contraception, Harper & Row, Hagerstown, Maryland, pp 53–83
4. Bachvarova R (1985) Gene expression during oogenesis and oocyte development in mammals. In: Browder L (ed) Developmental biology: a comprehensive synthesis. Plenum, New York, pp 453–524
5. Gougeon A, Chainy GB (1987) Morphometric studies of small follicles in ovaries of women at different ages. J Reprod Fertil 81:433–442