Typhoid fever and typhus fever . ded extremities, about thrice as long as theyare wide, and in absolute length one-third the diameter of a red blood-corpuscle. In ulcerated Peyers patches and in other parts at the heightof the specific lesions the bacilli form, by longitudinal application to oneanother, filamentous structures, first described by Gaff ky as pseudo-filaments. Under various circumstances the bacilli undergo changes inform, size, and arrangement. Thus the pseudo-filaments alreadymentioned will be found in old bouillon-cultures or gelatin-cultures,as well as on potato of acid react
Typhoid fever and typhus fever . ded extremities, about thrice as long as theyare wide, and in absolute length one-third the diameter of a red blood-corpuscle. In ulcerated Peyers patches and in other parts at the heightof the specific lesions the bacilli form, by longitudinal application to oneanother, filamentous structures, first described by Gaff ky as pseudo-filaments. Under various circumstances the bacilli undergo changes inform, size, and arrangement. Thus the pseudo-filaments alreadymentioned will be found in old bouillon-cultures or gelatin-cultures,as well as on potato of acid reaction, growing to remarkably longstructures. The individual bacilli also appear to become plumper upongelatin and potato than upon agar or bouillon. They yield up these ETIOLOGY. 27 peculiarities, however, when transferred to other nutrient media, inaccordance with the character of the latter. Spore-formation was formerly incorrectly believed to take place inthe bacilli, and the bright bodies that failed to take the stain lying at. Fig. 1.—Typhoid-bacilli; impress-preparation. the extremities as well as in the middle of the bacilli were thoughtto be spores. These are at the present time considered as deficiencies,attributable either to a process of involution in the bacilli or as anartefact developed in heating and staining (H. Büchner).
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttyphoid, bookyear1901
