Abstract

In a previous publication attention was called to the fact that colonies resembling the L type colonies of Streptobacillus monilli-formis develop in various bacterial cultures.1 Observations to date would seem to indicate that these L type of colonies originate from, or in close association with large swollen bacterial forms. If such observations have been interpreted correctly, then these large bacterial forms possess a definite biological significance. The occurrence of such large forms in bacterial cultures has been observed in the past. They have been regarded by the majority of bacteriologists as degenerative forms because they fail to multiply when transplanted.In studying the L type of colonies, cultures of various bacterial strains were examined in the manner previously described in situ on the surface of the agar. If one examines such cultures from day to day one has an excellent opportunity of determining the fate of the large bodies. Our experience was similar to that of previous workers;2 name...

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