The spheroidal and ameboid spermatozoa shared four major components iodinatable by lactoperoxidase and DD¹²⁵ISA methods. Three of these components have approximate molecular weights of 51,000, 55,000 and 62,000, respectively. The molecular weight of the fourth component was extremely large as suggested by its position near the top of SDS-gel. In both forms three small molecular weight components (10,000, 12,000 and 18,400 MW), minimally iodinated by lactoperoxidase, were more extensively labeled with DD¹²⁵ISA. The ameboid spermatozoa differed from the spheroidal form in showing a decrease in iodination of the slowest electrophoretic band and in the presence of two iodinatable components (greater than 66,000 MW) not detectable in the spheroidal form. These differences were evident in the iodination profiles of both lactoperoxidase and DD¹²⁵ISA methods.

Both spheroidal and ameboid spermatozoa contain two molecular species of Conconavalin A (Con A) receptors identified by histochemical staining after electrophoresis on SDS-gels. The electrophoretic mobilities of these two Con A receptors are similar in the two forms of spermatozoa and are characterized by having large molecular weights; one receptor has a molecular weight of 62,000, and the second has a molecular weight much greater than 66,000.