Actin in ionophore-A23187 treated boar sperm has been localized by indirect immunofluorescence and immunoelectronmicroscopy (IEM), using an anti-actin monoclonal antibody. By IEM, after en bloc staining technique and treatment with 15 nm colloidal gold-IgM complex, actin was found associated with the plasma membrane (PM) and the outer acrosomal membrane vesicles and under the PM of the equatorial segment.
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Camatini et al. (1986) studied this question.
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