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Proliferation of intratubular germ cell neoplasia cells based on diagnosis of pre-invasive disease (PRE INV; n=7), seminoma (SEM; n=7) or non-seminoma (NON-SEM; n=8). A) Proliferation of OCT4+ intratubular germ cell neoplasia cells. B) Proliferation of OCT4+/MAGEA4+ intratubular germ cell neoplasia cells. Mean +/− SEM. * p<0.05, ** p<0.01, in comparison with pre-invasive intratubular germ cell neoplasia.
