Albumin protects CLL cells from radiation-induced apoptosis.

(A) CLL cells from 3 patients were exposed to the indicated doses of gamma radiation. They were then incubated in RPMI medium supplemented with FCS or rHA. The percentage of apoptotic cells was determined following 24-hour incubation. The mean values ± standard errors are shown. (B) Quantitation of PARP cleavage in irradiated CLL cells incubated for 12 hours with FCS or rHA.