Question

Rickes et al. recovered active crystalline vitamin B12 from the culture of

a.

Streptomyces griseus

b.

Bacillus megaterium

c.

Streptomyces olivaceus

d.

Streptomyces lactis

Answer: (a).Streptomyces griseus

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Q. Rickes et al. recovered active crystalline vitamin B12 from the culture of

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