| comparison of montana and alaska isolates of echinococcus multilocularis in gerbils with observations on the cyst growth, hook characteristics, and host response. | to assess its biological distinctness, an isolate of echinococcus multilocularis from montana was compared with an isolate from alaska in gerbils (meriones unguiculatus) by means of intraperitoneal inoculations with protoscoleces. the cysts formed by the montana isolate were entire, hyaline, and translucent, whereas those produced by the alaska isolate were granular, yellowish, and opaque. vesicles of the montana isolate were larger, produced protoscoleces more slowly but in greater numbers, and ... | 1992 | 1597801 |