凋亡（apoptosis）一词最早由澳大利亚病理学家Johnhers于1972年提出，是近年来研究较多的细胞死亡方式。凋亡是由基因控制的，是细胞自我消亡的过程，其最突出的特点是染色质的有控降解’‘’。精子发生（sper－matogenesis）是指精原细胞经复杂的神经体液调节，不断增殖、发 The term apoptosis was first proposed by Australian pathologist Johnhers in 1972. It is the most studied way of cell death in recent years. Apoptosis is controlled by genes and is the process of cell self-death. The most prominent feature of apoptosis is the controlled degradation of chromatin. Spermatogenesis (sper-matogenesis) refers to the spermatogonia by the complex neurohumoral regulation, proliferation, hair