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Bacillus anthracis, ground glass colonies
bacillus-anthracis-ground-glass-colonies-genax04-high
Bacillus anthracis, ground glass colonies

    On agar plates, Bacillus anthracis forms opaque, grayish-white colonies 3–4 mm in diameter, with a rough surface and irregular, round margins called glass beads.

Courtesy of Dr. J. Glenn Songer.

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