It is also the main ingredient of Kovac's reagent, used for the bacterial diagnostic indole test.
2.
The two biotypes are distinguishable from an indole test : biovar 1 is indole positive whereas biovar 2 is indole negative.
3.
In addition, it is indole test-positive representing this organism can split tryptophan to indole, pyruvate, and ammonia.
4.
The other three tests include : the indole test [ I ], the methyl red test [ M ], and the citrate test [ C ].
5.
These two can be distinguished by the indole test or the Pyr test, both of which should be clearly negative for " B . cepacia " and positive for " E . meningoseptica ".
6.
The term " IMViC " is an acronym for each of these tests . " I " is for indole test; " M " is for methyl red test; " V " is for Voges-Proskauer test, and " C " is for citrate test.
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