Mason S J, Aikawa M, Shiroishi T, Miller L H
Am J Trop Med Hyg. 1977 Mar;26(2):195-7. doi: 10.4269/ajtmh.1977.26.195.
It has been observed that a surface coat, 20 nm in thickness, extends from the plasma membrane of extracellular merozoites and that this coat contains strain-specific antigens. In the present study we determined the possible effect of protein in the culture medium on this structure. The surface coat on merozoites in culture medium devoid of protein was indistinguishable by transmission electron microscopy from the coat in a protein-containing medium. This supports the hypothesis that the surface coat originates from the parasite rather than from adsorbed serum protein.
据观察，一种厚度为20纳米的表面被膜从细胞外裂殖子的质膜延伸出来，并且这种被膜含有菌株特异性抗原。在本研究中，我们确定了培养基中的蛋白质对这种结构可能产生的影响。在不含蛋白质的培养基中培养的裂殖子上的表面被膜，通过透射电子显微镜观察，与含蛋白质培养基中的被膜没有区别。这支持了表面被膜起源于寄生虫而非吸附的血清蛋白这一假说。
