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Checkpoint Rad proteins in the G1 checkpoint. A. Wild type spores germinating in the presence of caffeine were irradiated and analysed as described in the legend to Figure 1A. B. Germinating rad3 spores were irradiated and analysed as described in the legend to Figure 1A. C. The indicated mutants were sporulated and the germinating spores were irradiated and analysed as described in the legend to Figure 1A.
