Heath Ledger's Parents: Daughter Matilda is 'Very Much Like Her Dad'. Actor Heath Ledgerâs daughter Matilda, 7, looks an awful lot like her daddy, and his parents agree the two are âvery muchâ alike. In recognition of the fifth anniversary of Heathâs death on Jan. 22, Kim and Sally Ledger sat down with Australiaâs New Idea magazine to talk about their son.
The primitive stem cell of spermatogenesis found on the periphery of each seminiferous tubule is called spermatogonia. Spermatogonia is an undifferentiated male germ cell.
The stem cell population of the germinal cells lies on the basal lamina of the convoluted seminiferous tubules. These are Type A spermatogonia. These cells undergo mitosis: one of the daughter cells renew the stock of type A spermatogonia, the other becomes a type B spermatogonia.