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Whole-mount detection of human germ cells xenotransplanted into recipient mouse seminiferous tubules by different germ cell markers. PKH67-positive cells (green) indicated human cells co-stained with (A) UTF1 (red), (B) UCHL1 (red), (C) LIN28 (red) within the recipient mouse tubules. Corresponding to figures (A–C), donor testis biopsies were from Patient ID #11, #5, #5. DAPI (blue) for nuclear staining. Scale bar, 100 μm.
