21211001 Cells stain by Gram methods.
21211021 Cells are gram positive.
21211022 Cells are gram negative.
21211023 Cells are gram variable.
21211002 Cells are gram positive in early exponential growth.
21211003 Cells are gram negative in early exponential growth.
21211004 Cells are gram variable in early exponential growth.
21211005 Cells lose gram positive character after cessation of active growth (stationary phase).
21211006 Cells appear barred when stained by Gram methods.
21211027 Individual cells stain unevenly when stained by Gram methods.