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Observation of B6 and Rc3 sperm heads (a) and flagella (b) using electron microscopy. No abnormality was observed on B6 sperm where nuclear and inner acrosomal membranes seem joined, whereas the acrosome seems abnormally attached to the nucleus in approximately 50% of the sperm head of Rc3 males (a, arrows), in addition to the presence of lipid droplets (b, arrowheads) in the residual bodies at the level of the midpiece in approximately 15% of the sperm.
