On the other hand, our results showed that the RNA expression levels of intrinsic and extrinsic signals of apoptosis, such as Fas, casp3 and bax, in the testicular tissue of immature mice treated with AML or CYT (alone) or in combination (AML+CYT) were similar to those of the control group (Figure 3C). The gene discussed is FAS; the disease is acute myeloid leukemia.