Microbiology Bacteria da8b6edb Dienes stain is used for- A Compylobactor B Helicobacter C Rickettsiae D Mycoplasma High-Yield Explanation Ans. is 'd' i.e., Mycoplasma * Dienes method (Dienes staining) - For colonies of mycoplasma.* Dienes phenomenon - To detect swarming of proteus.