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A. Percentage of seminiferous tubules containing R-loops. B. Average number of apoptotic spermatocytes per tubule in testes from ARCA mice. C. Percentage of R-loop & TUNEL-positive cells. D. Average number of apoptotic cells containing DNA DSBs (γH2AX). For each panel, 200 tubules were examined per animal and cells were counted in each tubule (n = 3). Error bars represent SEM.
