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A review of some recent work on papillary variation in bacteria and bacterial cytology

Published online by Cambridge University Press:  15 May 2009

F. H. Stewart
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Some recent advances in the subject of bacterial variation and cytology are:

(1) The white race of Bact. coli-mutabile contains lactase, inhibited by some cause unknown (Deere et al. 1939). Deere (1939) suggests that the cells of the white race may be impermeable to lactose while the lactase system is intracellular.

(2) Variation from non-lactose-fermenter to lactose fermenter in Bact. coli-mutabile takes place on lactose only (Stewart, 1942).

(3) The nucleus of Myxococcus xanthus consists of definite chromatin masses. A process resembling karyokinesis and autogamic conjugation precedes spore formation (Beebe, 1941).

(4) The nucleus of vegetative bacterial cells consists of a pair of dumbbell-shaped chromatinic bodies, which split longitudinally before cell division. The dumbbell bodies are comparable to the chromosomes of animals and plants (Robinow, 1942).

(5) Careful plating provides unquestionably pure lines in the coliform group (Stewart, 1942).

Type
Research Article
Information
Journal of Hygiene , Volume 43 , Issue 2 , April 1943 , pp. 136 - 141
Copyright
Copyright © Cambridge University Press 1943

References

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