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Superposition of bright field and lectin-binding fluorescent patterns. (a) Pattern 1, highly stained acrosomal region. (b) Pattern 2, highly stained acrosomal and postacrosomal region. (c) Pattern 3, highly stained equatorial segment. (d) Pattern 4, dotted staining over the head. (e) Pattern 5, faint staining over the head. Scale bar = 10 μm.
