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Illustration of magnified <i>Spirochaeta obermeieri</i>. This genus of bacteria have "the cells united in long slender threads which usually show narrow spiral windings. The filaments have the liveliest movements, and clearly propel themselves forward and back, but are also able to bend in various ways...<i>S. obermeieri</i> is found in the blood of those sick with recurrent fever, is the cause of the disease." &mdash;Whitney, 1889

Spirochaeta Obermeieri, Bacteria

Illustration of magnified Spirochaeta obermeieri. This genus of bacteria have "the cells united in long…