English literature - Student Encyclopedia (Ages 11 and up) The writers of the British Isles, including England, Scotland, and Wales, have produced a great wealth of literature. The language in which English literature is written has evolved over hundreds of years and is still changing.
The indole test is a biochemical test performed on bacterial species to determine the ability of the organism to split indole from the amino acid tryptophan.
In the presence of oxygen, some bacteria, like E. coli, are able to split tryptophan into indole and Î±-aminopropionic acid. This reagent is for detecting the indole and identifying the indole-positive and indole-negative microorganisms.