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canvas prints horizontal canvas prints lactobacillus bulgaricus canvas prints bacterium canvas prints microbe canvas prints microbes canvas prints microorganism canvas prints microbiology canvas prints microorganisms canvas prints bacteriology canvas prints intestinal canvas prints human canvas prints dairy products canvas prints milk canvas prints mouth canvas prints stomach canvas prints

photographs horizontal photos lactobacillus bulgaricus photos bacterium photos microbe photos microbes photos microorganism photos microbiology photos microorganisms photos bacteriology photos intestinal photos human photos dairy products photos milk photos mouth photos stomach photos

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Yogurt bacteria. Colored scanning electron micrograph (SEM) of the bacteria Streptococcus thermophilus and Lactobacillus bulgaricus. S. thermophilus (blue) are spherical, Gram-positive bacteria that often form chains, as seen here. This thermophile bacterium is capable of living at temperatures of 50-65 degrees Celsius. L. bulgaricus (orange) are Gram-positive rod-shaped bacteria that grow in acid environments (including the human intestinal tract) and produce lactic acid by the fermentation of carbohydrates. Both of these bacteria are used in the manufacture of yogurt from milk, by incubation at a high temperature. Magnification unknown.