In this monumental work in folio format Ehrenberg extended Otto Friedrich Müller’s bacteriological classification. Like Müller, he made no distinction between protozoa and bacteria, classing them both as infusoria. Hi…
K. Futaki, I. Takaki, T. Taniguchi, and S. Osumi found a spirillum (Sp. morsus muris) in the lymphatic glands and blood stream in cases of rat-bite fever (sodoku).
Robertson proved one of the causal organisms of rat-bite fever to be Sp. morsus muris. He re-named it Spirillum minus Carter, 1887, identifying it as the first spiral micro-organism to be described from a rodent.