Abstract
SUMMARY: Protoplasts of Bacillus megaterium grew well and divided in 1% casein hydrolysate (enzymic) medium containing 0.5 M-NaCl as the stabilizer. A fibrous layer of coat, possibly composed of murein, developed around the growing protoplast. A small protuberance then formed on the protoplast and grew until a symmetrical dumbbell-shaped body was formed. The coat did not develop around the ‘daughter’ protoplast.

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