Topic summary
Spirochete

Extracted from the Wikipedia article Spirochaete.
A spirochaete () orspirochete is a member of the phylumSpirochaetota (also called Spirochaetes), which contains distinctive diderm (double-membrane) Gram-negative bacteria, most of which have long, helically coiled (corkscrew-shaped or spiraled, hence the name) cells. Spirochaetes are chemoheterotrophic in nature, with lengths between 3 and 500 μm and diameters around 0.09 to at least 3 μm.