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Immunofluorescent/differential interference contrast (DIC) micrographs of normal and patient spermatozoa stained with 4′,6-diamidino-2-phenylindole (DAPI) for DNA (blue) and rhodamine red-X for SPANXa/d protein (red). (A)–(C): Normal spermatozoa; (D)–(F): Globozoospermia; scale bars = 10 μm.
