Deletion of PKBα prevents neoplastic expansion of
DNA-PKcs-/- thymocytes. A, histological analysis of
thymi from wild-type (WT), DNA-PKcs-/- (KO), and
DNA-PKcs-/-PKBα-/- double knock-out (DKO)
mice and thymic tumors from DNA-PKcs-/- mice. Thymi were fixed with
4% paraformaldehyde, processed with paraffin, sectioned, and stained with
hematoxylin-eosin (×400 magnification; scale bar indicates 50
μm). The insets show ×40 magnification. M, medulla;
C, cortex. B, flow cytometric analysis of thymocytes from
WT, DNA-PKcs-/- (KO), and
DNA-PKcs-/-PKBα-/- (DKO) mice for CD4 and CD8
markers.