Journal of Applied Microbiology

Perkins, W. E.

doi: 10.1111/j.1365-2672.1965.tb02121.xpmid: N/A

Grecz, N.

doi: 10.1111/j.1365-2672.1965.tb02122.xpmid: N/A

Beerens, H.; Sugama, S.; Tahon‐Castel, M.

doi: 10.1111/j.1365-2672.1965.tb02123.xpmid: N/A

Of 287 strains of clostridia of 23 different species 96 grew well at 6°, 77 of which were Clostridium carnofoetidum var. amylolyticum and 16 were Cl. perfringens.

Ross, Helen E.

doi: 10.1111/j.1365-2672.1965.tb02124.xpmid: N/A

Hepple, J. R.

doi: 10.1111/j.1365-2672.1965.tb02125.xpmid: N/A

Gibson, T.

doi: 10.1111/j.1365-2672.1965.tb02126.xpmid: N/A

Goudkov, A. V.; Sharpe, M. Elisabeth

doi: 10.1111/j.1365-2672.1965.tb02127.xpmid: N/A

Hobbs, Betty C.

doi: 10.1111/j.1365-2672.1965.tb02128.xpmid: N/A

Skulberg, A.; Hausken, O. W.

doi: 10.1111/j.1365-2672.1965.tb02129.xpmid: N/A

The colonial forms and other characteristics of toxigenic and less toxigenic (hypotoxigenic) variants of Clostridium botulinum types A, B, C, D and E are described. In addition to differences in the appearance of the colonies the hypotoxigenic variants were able to produce larger numbers of spores. Transformation from one form to the other was found when they were grown in Robertson's meat broth to which sterile culture filtrates (boiled or unboiled) from the other form was added. A transformation from hypotoxigenic variants to toxigenic forms was also found when hypotoxigenic forms were grown in Robertson's medium to which the sterile culture filtrate (boiled or unboiled) of a strain of Cl. welchii had been added. The possibility of contamination of the cultures is emphasized.

Johannsen, A.

doi: 10.1111/j.1365-2672.1965.tb02130.xpmid: N/A