Lactococcus lactis

Lactococcus lactis is a gram-positive bacterium used extensively in the production of buttermilk and cheese, but has also become famous as the first genetically modified organism to be used alive for the treatment of human disease. L. lactis cells are cocci that group in pairs and short chains, and, depending on growth conditions, appear ovoid with a typical length of 0.

5 - 1.
5 μm.
L.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 2.0

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