By shedding light on variation in time as well as in space, long-term biogeographic studies can help us define organisms' distribution patterns and understand their underlying drivers. Here we examine distributions of Pseudomonas in and around 15 human homes, focusing on the P. putida and P. fluorescens species groups. We describe recovery from 10,941 samples collected during up to 8 visits per...

Kotake and Nakayama (1) observed the conversion of kynurenine to anthranilic acid and alanine by a mammalian liver extract. Subsequently the enzyme responsible for this reaction in the mammal was partly purified (2,3) and the enzyme, prepared from vitamin Be-deficient animals, was shown to require pyridoxal phosphate for its maximal activity (2). During an investigation of tryptophan metabolism...

Bacillus cereus, Clostridium perfringens, Staphylococcus aureus, Pseudomonas fluorescens, Pseudomonas fragi, Escherichia coli, and Salmonella "anatum" were challenged with butylated hydroxyanisole (BHA). Susceptibility was measured as the concentration of BHA required to cause a 90% reduction in bacterial survivors. Staphylococcus aureus LP and P. fragi were two of the most resistant species ex...