Figure 14. The changes in the seminiferous epithelium after a single episode of heat to the testis is shown. A depletion of heat sensitive germ cells is seen at 14 days and is associated with an increase in testosterone production by the testis in vitro and a decline in seminiferous tubule fluid production and androgen binding protein (ABP) levels in the testis. Data from Jégou et. al. 1984 (reference 136).