Pittilo R M, Ball S J
Parasitology. 1984 Aug;89 ( Pt 1):1-7. doi: 10.1017/s0031182000001074.
Macrogametogony and the formation of the oocyst wall has been examined in Eimeria acervulina. Macrogametes develop within a parasitophorous vacuole. Within the cytoplasm can be observed wall-forming bodies of Type I (WFBI) and Type II (WFBII), a nucleus, mitochondria, canaliculi and polysaccharide granules. WFBII are unusual in possessing a membrane internal to the granular endoplasmic reticulum. Formation of the outer layer of the oocyst wall is preceded by the separation of a veil membrane, and accompanied by morphological changes in the WFBI. WFBI material is deposited between the veil-forming membrane and the two cytoplasmic membranes. A newly formed membrane divides this outer layer during its early development. The inner layer of the oocyst wall is formed from WFBII material which is deposited between the cytoplasmic limiting membranes. The outer layer of the oocyst wall consists of granular and osmiophilic parts, but the inner layer of the wall is homogeneous.
已对堆型艾美耳球虫的大配子生殖和卵囊壁形成进行了研究。大配子在一个寄生泡内发育。在细胞质中可观察到I型壁形成体（WFBI）和II型壁形成体（WFBII）、一个细胞核、线粒体、微管和多糖颗粒。WFBII的独特之处在于其颗粒内质网内部有一层膜。卵囊壁外层的形成之前有一层面纱膜分离，并伴有WFBI的形态变化。WFBI物质沉积在形成面纱的膜和两个细胞质膜之间。在其早期发育过程中，一层新形成的膜将这一外层分隔开。卵囊壁的内层由沉积在细胞质限制膜之间的WFBII物质形成。卵囊壁的外层由颗粒状和亲锇部分组成，但壁的内层是均匀的。
