Ribotyping is a method to identify and classify bacteria based upon differences in r-DNA. Under this category databases for which of the following bacteria have NOT been established?

Correct option is D

✅ (d) None of these:
· Ribotyping involves analyzing patterns in ribosomal RNA genes to identify bacterial species.
· Databases exist for major pathogens including Listeria, Staphylococcus, and Salmonella to aid in epidemiology and outbreak investigation.
· All the bacteria listed have established ribotyping databases for identification and classification purposes.
❌ (a), (b), (c): Incorrect, as ribotyping databases for these bacteria do exist.