Quantification of the TUNEL-labeled pachytene spermatocytes as a
function of the seminiferous epithelium stage. Three different rats killed at
each time point after the administration of MAA were used, and the
TUNEL-positive pachytene spermatocytes were counted in 10 testicular
cross-sections per animal. Data are expressed as the percentage of
TUNEL-positive pachytene spermatocytes
