
thumb|Listeria grown on agar medium thumb|Transmission electron microscopy|TEM [[micrograph of Listeria monocytogenes]]
Genus
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thumb|Listeria grown on agar medium thumb|Transmission electron microscopy|TEM [[micrograph of Listeria monocytogenes]]
Listeria is a genus of bacteria that acts as an intracellular parasite in mammals. As of 2024, 28 species have been identified. The genus is named in honour of the British pioneer of sterile surgery Joseph Lister. Listeria species are Gram-positive, rod-shaped, and facultatively anaerobic, and do not produce endospores.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).