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Cellular localization of AK4 in the testis. Immunohistochemical analyses were performed using anti-AK4 (A, B), anti-Tom20 (C), and anti-GRP-75/mtHSP70 antibodies (D). Bar=100 µm (A, C, D), and 20 µm (B). Arrowheads indicate spermatogonia. Scy, spermatocytes; ST, spermatids; SZ, spermatozoa; L, Leydig cells.
