Figure 5. ATM is involved in ensuring mono-allelic RAG-mediated cleavage on Tcra alleles.
(A) Frequency of γ-H2AX association on total (left) or paired (right) Tcra alleles in WT and Atm−/− DP cells. p values were calculated using a two-tail Fisher exact test.
(B) Confocal sections show examples of simultaneous bi-allelic γ-H2AX association on unpaired (top) and paired (bottom) Tcra alleles in Atm−/− DP cells. 3’α in red, 5’α in green and γ-H2AX in white. Scale bars = 1 µm.
See also Figure S4 and Table S5 for details and full statistical analyses.