title: A rapid bioassay method for gramicidin by measuring rubidium ion leakage from Streptococcus faecalis.
mesh_terms: D001681:Biological Assay / Q000379:methods*; D013293:Enterococcus faecalis / Q000187:drug effects / Q000378:metabolism*; D006096:Gramicidin / Q000032:analysis* / Q000494:pharmacology; D012413:Rubidium / Q000378:metabolism*
chemical_list: D006096:Gramicidin; D012413:Rubidium