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运用扫描电镜技术对青海牦牛株和藏羊株细粒棘球绦虫进行了观察。结果表明两株大部分虫体顶突缺乏微毛构成的顶部，体表散在有很短的柱状或棘状微毛，并存在大量微孔；牦牛株虫体生殖孔周围具有盘状突起，藏羊株虫体则否；两株虫体生殖孔周围均密布感觉乳突；牦牛株虫体雄茎表面密布绒线状细长微毛，藏羊株虫体雄茎表面极少或缺乏微毛；两株虫体雄茎顶端均有细长丝状物自雄茎日伸出。由此可见，青海两株虫体的体表结构既有相似之处．又存在差别，显示出不同虫株的形态结构特点。作者认为这是该虫种在长期的生物演化过程中变异的结果。
Scanning electron microscopy of Qinghai yak and Tibetan sheep strains of Echinococcus granulosus were observed. The results showed that the apical process of most of the larvae of the two strains lacks the top of the micro-hair, and the surface of the body has scattered short columnar or spiculate micro-hair and a large number of micropores. The yak strain has disc-shaped protrusions around the reproductive orifice Sheep strains are not; the two reproductive colony of the two females around the dense feeling of papillae; yak strains of male stems densely covered with velveteen hairy slender micro-hair, Tibetan sheep strains of male stem little or no hair micro-surface; Two strains of male stem top have thin filaments protruding from the male stem. Thus it can be seen that there are similarities between the surface structures of the two parasites in Qinghai. There are also differences, showing the morphological characteristics of different insect strains. The authors believe this is the result of a variation of the species in long-term biological evolution.