Some morphological and other variations in a strain of Bact. lactis aerogenes accompanying its adaptation to change of medium

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Abstract
When a certain slow-growing strain of Bact. lactis aerogenes (Aerobacter aerogenes) was transferred from bouillon medium to a synthetic medium containing (NH4)2SO4, glucose, potassium dihydrqgen phosphate, and MgSO4 and subcultured many times in the latter, certain changes occurred. These were the attainment of stationary populations and morph. changes which indicated that the individual cell functions were responsible for (a) the removal of growth inhibitors, (b) elongation and (c) division of cells proceeding to adaptation independently and at different rates. The evidence obtained experimentally indicated that (b) and (c) could become so unbalanced that thread-like cells, of enormous length resulted.

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