Dr Jobby, you may try incorporating vancomycin in your MRS media. It will work. Secondly, you may try pre-incubation/enrichment of your samples before serial dilution.
@Harsh Panwar....thanks a lot. Ill try . At what concentration do i add vancomycin.?
....thanks a lot. Ill try . At what concentration do i add vancomycin.?
Also sir some isolates i had are not reviving at all. This has happened for lactobacillus isolates. I also got a similar phenomena in isolates which were transparent, gram positve cocci in chains.