Hello,

Spermatogenesis is the process by which haploid (https://en.wikipedia.org/wiki/Haploid) spermatozoa (https://en.wikipedia.org/wiki/Spermatozoa) develop from germ cells (https://en.wikipedia.org/wiki/Germ_cell) in the seminiferous tubules (https://en.wikipedia.org/wiki/Seminiferous_tubules) of the testis (https://en.wikipedia.org/wiki/Testis) . This process starts with the mitotic division (https://en.wikipedia.org/wiki/Mitosis) of the stem cells (https://en.wikipedia.org/wiki/Stem_cell) located close to the basement membrane of the tubules. ^{(https://en.wikipedia.org/wiki/Spermatogenesis#cite_note-1)} These cells are called spermatogonial stem cells (https://en.wikipedia.org/wiki/Spermatogonial_Stem_Cells) .