The “string of pearl” colonies on nutrient agar is produced by
Correct Answer: Bacillus anthracis
Description: When Bacillus anthracis is grown on the surface of a solid medium containing 0.05-0.5 units of Penicillin/ml, in 3-6hours the cells grow large, spherical and in chains on the surface of the agar resembling a string of pearls. This string of pearls reaction clearly differentiates bacillus anthracis from Bacillus cereus and other aerobic bearers. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 252
Category:
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