IN dark-ground microscopy with the sun as light-source, motile bacteria, when swimming fast, show a tail, as in the top left-hand photograph reproduced. This tail is occasionally seen to untwist ...

Two main classes of transposons are involved in acquisition of resistance genes: Narrow-Spectrum β-lactamases in Proteus spp. Narrow-spectrum β-lactamases being inhibited by clavulanic acid (e.g., TEM ...

Objective: To describe the polymorphisms of gene cassette promoters of the class 1 integron in clinical Proteus isolates and their relationship with antibiotic resistance. For typical class 1 ...