. Pathogenic microörganisms; a practical manual for students, physicians, and health officers . irulent epidemics. The most interesting member of this group is Nosema bom-bycis, the cause of silkworm disease (P6brine). The organism forms many smallspores each with one polar capsule. The spores, which are carried by the foodinto the intestinal canal of the caterpillar, pass through the walls of the intes- ?tines, and infect all organs. Spores found in the ovary may be carried overto the newly hatched silkworms, thus causing a further dissemination of thedisease. As far as is known man is not i
. Pathogenic microörganisms; a practical manual for students, physicians, and health officers . irulent epidemics. The most interesting member of this group is Nosema bom-bycis, the cause of silkworm disease (P6brine). The organism forms many smallspores each with one polar capsule. The spores, which are carried by the foodinto the intestinal canal of the caterpillar, pass through the walls of the intes- ?tines, and infect all organs. Spores found in the ovary may be carried overto the newly hatched silkworms, thus causing a further dissemination of thedisease. As far as is known man is not infected by this group. The other member of this group, of interest here, is Nosema lophii interest lies in the fact that it has been found to infect only the ganglioncells of the sea-devil, thus apparently resembling in its parasitic nature theorganism causing hydrophobia. SARCOSFORIDIA. This order is very little known but, considering the fact that through eatinguncooked infected meat it may be found in man, though rarely, its chief char-acteristics should be noted here. o ^ %f Fig. 182.—Sarcocysiis tenella from the Fig. 183.—Sarcocystis miescheri, a, small striped muscle of a swine. A full-grown cells from a cell group; b, loosening of thecyst, showing readiately striped membrane, protoplasm from the cell wall; c, d, sickle-which is broken on the right side. (Ber- shaped bodies (sporozoites) formed fromtram.) the small cells. (From Wasielewski.) (Manz.) The Sarcosporidia are parasites of the striped muscles or connective tissueof some of the warm-blooded vertebrates (various birds and mammals). Theyare found in the adult state in elongated sacs known as Raineys orMieschers tubes (Fig. 182). The trophozoite is a motionless elongated body, limited by a cuticle grow-ing into a compUcated structure. Spore-formation begins at an early stage 536 8P0R0Z0A—CILIATA and proceeds during the growth of the trophozoite {Neosporidia) which maybecome very large. The spo
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