A soil isolate of Actinoplanes that produces the chemically unrelated new amibiotics teichomycins A, and A2 has been proposed as a new species named Actinoplanes teichomyceticus nov. sp. (ATCC 31121). Studies of medium and fermentation conditions indicated that the highest antibiotic titers, ca 900 u/ml, are obtained in a medium containing 1 (w/v) glucose, 1 % cotton seed meal, 1 % malt extract...

A bacterial bath is a model active system consisting of a population of rodlike motile or self-propelled bacteria suspended in a fluid environment. This system can be viewed as an active, nonequilibrium version of a lyotropic liquid crystal or as a generalization of a driven diffusive system. We derive a set of phenomenological equations, which include the effects of internal force generators i...

The lipids of the skin after exposure to ultraviolet light are bactericidal. Since other fats and oils which have been irradiated are bactericidal on account of the active oxygen released on contact with bacteria, the mechanism of the bactericidal action of irradiated lipids of the skin must be similar because the lipids have the properties of other irradiated fats and oils. Irradiation increas...