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Expression of arf tumor suppressor in spermatogonia facilitates meiotic progression in male germ cells.

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Figure 1. Arf protein expression in mitotically dividing spermatogonia. Protein expression in sections of seminiferous tubules were determined by immunofluorescence analysis
Figure 3. Loss of expression of p19 Arf in Arf Cre/Flox testes.
Figure 5. Increased frequency of BrdU-incorporating sper- sper-matogonia in Ink4a -null mice
Figure 6. Arf deficiency leads to increased apoptosis of primary spermatocytes. (A) During spermatogenesis, germ cells move intraluminally as they differentiate, initially yielding primary meiotic spermatocytes (immunostained for Dmc1, green) that have det
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