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Expression analysis of different germ cell markers in Sbf1–/– mice. Northern blot of total RNA prepared from mouse testis at different time points of spermatogenic development. Autoradiogram shows transcript levels in Sbf1–/– versus wild-type mice probed with 32P-labeled DMC1, Hsp25, and calspermin cDNAs. The same blot was hybridized with a β-actin probe as a control.
