germinal cell การใช้

• In 1979, Levin described germinal cell aplasia with focal spermatogenesis where a variable percentage of seminiferous tubules contain germ cells.
• Inactivation of the MTHFR gene in mice has been shown to result in infertility with abnormal testicular histology characterized by the absence of germinal cells and spermatogenesis arrest.
• This suggests that differentiation of germinal cells in the ovary and their subsequent arrival in the brood pouch as blastulae is not a continuous process over a breeding season but occurs as one or more  cohorts or  pulses which stop before the birth rate of young snails reaches its maximum.