. Pathogenic micro-organisms, including bacteria and Protozoa; a practical manual for students, physicians and health officers. 1611?.? MB A. Cell of root of cabbage infiltrated with Plasmodiophora amaebce. The amebte are fusing, form-ing Plasmodia. B. Beginning mitotic division of the amebse. The nucleus of the host cell beneath.(After Nawaschin.) be more or less easily obtained, and a certain amount of developmentmay be observed in the hanging drop. Much of the life cycle may besatisfactorily demonstrated from sections of cabbage seedlings and theolder plants. There are many points, however,
. Pathogenic micro-organisms, including bacteria and Protozoa; a practical manual for students, physicians and health officers. 1611?.? MB A. Cell of root of cabbage infiltrated with Plasmodiophora amaebce. The amebte are fusing, form-ing Plasmodia. B. Beginning mitotic division of the amebse. The nucleus of the host cell beneath.(After Nawaschin.) be more or less easily obtained, and a certain amount of developmentmay be observed in the hanging drop. Much of the life cycle may besatisfactorily demonstrated from sections of cabbage seedlings and theolder plants. There are many points, however, in the life history whichstill need explanation or corroboration. The Organism.—The roots are supposed to be infected by the flagel-lated ameboid sporozoites which leave the spore cysts in the moistearth and enter the young rootlets of the seedlings. Here they growand divide by cell bipartition and by a multiple increase of the nucleusthrough a primitive karyokinesis. As these forms increase in numbersthey are supposed to fuse into a plasmodium due to overcrowding GYMNAMCEBIDA. 549 (Fig. 169 A). Following- this fusion
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1910
