FAS and cyclic hematopoiesis: Positive immunostaining for Bcl-2, Bcl-xL, Fas and FasL proteins was detected in 29 (85.9%), 12 (34.3%), 21 (60%) and 9 (25.7%) the studied samples of the 35 HCC cases examined compared to 18 (52.9%), 0 (0%), 18 (52.9%) and 18 (52.9%) of samples of the 34 CH cases; respectively.