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4 Cards in this Set

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Runyon group I

Photochromogen

Produce pigment only exposed to light.

Runyon group II

Scotochromogen

Produce pigment in dark and light surrounding.

Runyon group III

Non-chromogen

No pigment produce either in dark or light surrounding.

Runyon group IV

Rapid growth

No pigmented and mature from small Inocula at RT in 2 - 7 days.