What can be the reasons for the control well also to turn blue (medium and inoculum only) with resazurin dye in MIC?

I am doing MIC with plant extracts against s. mutans. My control well which had the medium and the inoculum also remianed blue in colour after the addition of the resazurin dye and inclubated for...

17 March 2019 4,073 2 View