The Columbia Encyclopedia, Sixth Edition. 2001-07.
bacitracin
(bs´´tr´sn) (KEY) , antibiotic produced by a strain of the bacterial species Bacillus subtilis. It is widely used for topical therapy such as for skin and eye infections; it is effective against gram-positive bacteria, including strains of staphylococcus that are resistant to penicillin (see Gram’s stain). Bacitracin is toxic to humans and is no longer used internally.
s´´
tr
´s
