买嫩艾美耳球虫(Eimeria　tenella)裂殖子超微结构的观察

The Ultrastructural Studies on the Merozoites of Eimeria teneua

利用透射电镜对柔嫩艾美耳球虫裂殖子的超微结构进行了观察描述．柔嫩艾美耳球虫裂殖子的表膜由外膜和内膜复合体两层组成，外膜连续，内膜复合体在头部断开形成极环，在其它部位断开形成微孔；裂殖子的膜下微管２４根，起始于极环，向后延伸至细胞核处；裂殖子的头部由顶泡、锥体和极环组成，锥体和顶泡可以伸缩；柔嫩艾美耳球虫裂殖子棒状体３个以上，微线数量很多，二者都由电子致密的结构组成；细胞核位于裂殖子的中后部，外被双层膜，有电子致密的核仁和染色质．

The ultrastructure of the merosoites of Eimeria tenellawas observed and discribed. The Pellicle consist of two layer membranes, the outer membrane was a continous covering enclosing the whole merozoites, while the inner pelliedar complex is interrupted at the anterior and the micropore, and thicken to form the polar ring and micropore. There are 24 microtubules under the pellicle of the merozoite which originated from the polar ring, all of them are connected with the polar ring, and extend alongside the inner pellicular complex to the middle of the merozoite. The head of the merozoite consists of a conoid, an apical vesicule and polar ring. The conoid is a hollow truncated cone. The conoid and spical vesicule can scratch and contract. There are three or more rhoptry and a lot of micronemes. The nucleus has nucleolus. and two laver membranes.