. Pathogenic micro-organisms. A text-book of microbiology for physicians and students of medicine. (Based upon Williams' Bacteriology). Bacteriology; Pathogenic bacteria. SPOROZOA 437 cyte and enlarges, retaining its oval or circular form. The nucleus of the host cell is pushed out of position but its form is not ma- terially altered. The full-grown parasite segments, producing lo to 30 merozoits and leaving behind a small residual body con- taining the accumulated pigment, thus completing the asexual. Pig. 196.—Proteosoma prcecox in the blood of a field lark (Glauda arvensis). A, Young parasi
. Pathogenic micro-organisms. A text-book of microbiology for physicians and students of medicine. (Based upon Williams' Bacteriology). Bacteriology; Pathogenic bacteria. SPOROZOA 437 cyte and enlarges, retaining its oval or circular form. The nucleus of the host cell is pushed out of position but its form is not ma- terially altered. The full-grown parasite segments, producing lo to 30 merozoits and leaving behind a small residual body con- taining the accumulated pigment, thus completing the asexual. Pig. 196.—Proteosoma prcecox in the blood of a field lark (Glauda arvensis). A, Young parasite in a blood cell. B, Half-grown parasite which has pushed aside the nucleus of the erjrthrocyte. C, Parasite with clump of pigment and many nuclei. The nucleus of. the erythrocyte has been lost (uncommon). D, Division into eight- een merozoits. (From Doflein after Wasielewski.) cycle, which may be repeated many times. After a time some of the growing parasites become differentiated to form macro- gametocytes and microgametocytes, which are kidney-shaped and do not divide nor undergo further development in the vertebrate host. When the blood is drawn and diluted with citrated salt so-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original MacNeal, Ward J. , 1881-1946; Williams, Herbert Upham, 1866-. Philadelphia, P. Blakiston's Son & Co.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbacteri, bookyear1920
