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SYCP3 immunolocalization in the male germ cells cultured with RA. Clumped cells obtained after 4 days of culture of the male germ cells isolated at 13.5 dpc in the presence of RA were immunostained to detect SYCP3. Arrows show the germ cells that reached the pachytene stage. All other cells were in the zygotene stage. Bar = 10 μm.
