Diagnostic methods, chemical, bacteriological and microscopical : a text-book for students and practitioners . a condition associated with the presence of filariae in the blood(Jilaria sanguinis hominis). While many of these filarise are known, the THE BLOOD. 55I most common one is the Jilaria Bancrofti (filaria nocturna). These are from270 to 340 microns ( to mm.) long and from 7 to 11 microns are enclosed in a sheath which is considerably longer than is the parasiteand shows fine cross striations. The anterior end of the parasite is abruptlyrounded and has a six-tipped prep
Diagnostic methods, chemical, bacteriological and microscopical : a text-book for students and practitioners . a condition associated with the presence of filariae in the blood(Jilaria sanguinis hominis). While many of these filarise are known, the THE BLOOD. 55I most common one is the Jilaria Bancrofti (filaria nocturna). These are from270 to 340 microns ( to mm.) long and from 7 to 11 microns are enclosed in a sheath which is considerably longer than is the parasiteand shows fine cross striations. The anterior end of the parasite is abruptlyrounded and has a six-tipped prepuce and a sharp fang, while the posterior endtapers for about two-fifths of the length of the parasite. The median axisof the parasite is granular. The movement of these parasites is distinctlyprogressive at first as seen under the microscope, but they soon become motion-less, appearing to attach themselves to the glass slide at their anterior enough these embryos appear in the circulation only toward evening,their numbers gradually rising to a maximum about midnight and diminishing ® © o. Fig. 147.—Filaria bancrofti. {Da Costa.) toward dawn. During the day they are found in the internal organs, especiallythe lungs. The forms appearing in the blood are practically all embryos,as the adult types lie in the lymphatics where they obstruct the lymph flow. The obstruction in the lymph-glands may also be brought about by theeggs, which are 25 to 38 microns long by 15 broad. The embryos reach thegeneral circulation only through the thoracic duct. The female filaria is 85to 150 mm. long, with a distinct neck, a head with a simple, minute, terminalmouth, and a plain cylindrical body covered by a striated cuticle and taperingtoward the neck and tail. The tail ends bluntly and has a small depressionsurrounded by two lips. The male is about 80 mm. long, without a neck andhaving a tendril-like tail rolled into one or more spirals. Like the malarial organisms, the filaria h
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdiagnosis, bookyear19
