Either type, however, can be reduced to from the toxic amino group,-NH2, in the body in conjunction with the action of microorganisms such as streptococcus, Bacillus pyocyaneus, and proteus sp. One pareicular bioassay report on azo compounds showed that only 12 one particular bioassay report on azo compounds showed that only 12 out of 102 azo compounds did not reduce into amine.