Electron Microscopic Observations of Causative Microorganism of Rat-bite Fever

I. Several Forms and Flagella

Abstract

Causative microorganism of rat-bite fever (Spirillum minus Carter or Spirochaeta morsus muris Futaki et al.) collected from peritoneal fluids of infected mice, have been observed with the aid of the electron microscope.
Typical spiral, large granular, and whirl forms have been recognized in this microorganism. These forms were regarded as the shapes which appeared on the several stages of the life history.
On this experiment, a dispute about the flagellation, bipolar single flagellum or tufts of flagella were not settled.
Influence of the sampling technique and the basis of the electron microscopy of this microorganism were discussed.