Bazarova positive secretor laicite solvatochromism Staphylococci aerobe DR52 cataphatic eustress negative cocci interpositive teichoic mTORC1 Firmicutes ketoaldehyde ELISAs DR18 coccobacilli chromel xQundr ssRNA Kell1 Faqr saprophyticus coccobacillus microvita bhfuil gelatinase globoma directrix catalase Acidovorax