Fig. 82. A diagram of the life cycle of a typical member of the Myxosporidia. 

 The schizogony shown here (D-F) probably often does not occur. A, Escape 

 of germ. B, Migration within host. C, Infection of a cell of the latter. D-G, 

 Schizogony and reinfection. H, Multiplication of nuclei. I, Appearance of 

 first pansporoblast. J, Appearance of mare pansporoblasts and multiplica- 

 tion of syncytium by plasmotomy. K, L, Development of spores in a pan- 

 sporoblast. M, Fully formed spore, before conjugation. N, Ripe spore after 

 conjugation, env. envelope cell; nu.' nucleus of spore case; nu." nucleus of 

 pole capsule ; spb. undifferentiated sporoblast with nuclei which will become 

 those of the germ, spore case, and pole capsules; vac. vacuole containing 

 glycogen sometimes found; zy.nu. zygote nucleus. 



