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Bacterial culture from a trainer, SEM
Bacterial culture from a trainer. Scanning electon micrograph (SEM) of Brevibacteria. Brevibacteria are considered a major cause of foot and shoe odour because they ingest dead skin on the feet and, in the process, convert the amino acid methionine into methanethiol, which is a colorless gas with a distinctive putrid smell that has a sulfuric aroma. The dead skin that fuels this process is especially common on the soles and between the toes. The brevibacteria are also what give cheeses their characteristic smell. Magnification: x3500 when printed at 10 centimetres wide.
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