the cyst cells enclosing spermatomeres maybe synthesize a kind of scf-like protein, which can recognize specially the c-kit receptor on the cellular membrane of spermatomeres . then c-kit is activated, dimerizing and autophosphorylating . at the same time, the tyrosine kinase domain of c-kit is activized, which phosphorylates the proteins that have sh2 domain 精母细胞周围的囊细胞可能合成scf样蛋白,特异地识别精母细胞膜上的c-kit受体,并刺激c-kit发生二聚化、自体磷酸化,激活胞内酪氨酸激酶活性,活化具有“sh_2结构域”的靶蛋白,可能通过一系列信号级联,最终激活与减数分裂的相关蛋白或基因。