Spot indole test: evaluation of four reagents.

  title={Spot indole test: evaluation of four reagents.},
  author={J. Michael Miller and John W Wright},
  journal={Journal of clinical microbiology},
  volume={15 4},
Kovacs indole reagent, p-dimethylaminobenzaldehyde, Ehrlich indole reagent and p-dimethylaminocinnamaldehyde were used as spot indole reagents to test 359 strains of gram-negative rods growing on 5% sheep blood agar, Trypticase soy agar (BBL Microbiology Systems), and MacConkey agar. The p-dimethylaminocinnamaldehyde reagent was the most sensitive of those… CONTINUE READING