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Variability and reproduction of Leptospirae



Variability and reproduction of Leptospirae



Zhur Mikrobiol Epidemiol I Immunobiol (1): 70-76



Observations were made on single cells on dark ground by introducing small loop of culture into a drop of sterile transparent vaseline. The drop of culture was beaten up by vigorous mixing into drops 100-300 [mu] in diameter containing 1 lepto-spira each. The latent phase in the leptospirae lasts 2-8 days and the average generation time is 8-10 hours. The culture reaches its maximum concentration in 6-12 days. On dying, the leptospirae pass through a number of consecutive changes; increase in length, morphological changes, decrease in motility, plaiting together, formation of knots, loss of motility, granular disintegration, and lysis. The daughter forms appear only by transverse fission. No culture has ever been obtained from the pieces and granules.

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Variability and reproduction of Leptospirae Referat Zhur, Biol, 1956, No 9612. 1955

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