From carious teeth may be isolated streptothrix, leptothrix, spirilla and fusiform bacilli.
Division might occur in one plane only as in spirilla and bacilli, or in two planes only or in all three planes.
As early as 1873, spirilla were demonstrated in relapsing fever.
These terms are rarely used, since spirilla do not ordinarily remain attached.
spirilla are long, slender, thread-like cells, more or less spiral or wavy.
When division occurs in one plane only, the possible groupings are the same as among the spirilla or bacilli.
Aschoff and Koch have demonstrated in these ulcers the spirilla and fusiform bacilli so commonly found in the mouth.
Often these filaments are not straight, but spirally twisted, and are called "spirilla."
The same takes place with the spirilla of recurrent typhus and the microbe of erysipelas.
Examination of the blood prior to the invasion does not discover any spirilla.
spirillum spi·ril·lum (spī-rĭl'əm)
n. pl. spi·ril·la (-rĭl'ə)
A member of the genus Spirillum.
Any of various other spiral-shaped microorganisms.
A genus of large, aerobic, gram-negative bacteria having an elongated spiral form and a tuft of flagella.