Stains word associationVersión en línea stains word ass por kenneth thomas 1 Group 1 2 Group 2 3 Group 3 4 Group 4 5 Group 5 6 Group 6 7 Group 7 gram positive purple gram negative red thayer martin gonorreah mannitol staphylococcus sabourand fungi acid fast mycobacterium giemsa protozoan