gram-positive/gram-negative
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Gram-positive bacteria are those that are stained dark blue or violet by Gram staining. This is in contrast to Gram-negative bacteria, which cannot retain the crystal violet stain, instead taking up the counterstain (safranin or fuchsin) and appearing red or pink. Gram-positive organisms are able to retain the crystal violet stain because of the high amount of peptidoglycan in the cell wall. Gram-positive cell walls typically lack the outer membrane found in Gram-negative bacteria. Ref: wikipedia.
Most antibiotics if not broad spectrum will not work effectively one way over the other.
Most antibiotics if not broad spectrum will not work effectively one way over the other.
when referring to bacteria, gram positive http://en.wikipedia.org/wiki/Bacteria are those that are stained dark blue or violet by gram staininghttp://en.wikipedia.org/wiki/Gram_staining. This is in contrast to gram negative bacteriahttp://en.wikipedia.org/wiki/Gram-negative_bacteria, which cannot retain the crystal violet stain, instead taking up the conterstain (safranin or fuchsin) and appearing red or pink. Gram-positive organisms are able to retain the crystal violet stain because of the high amount of peptidoglycan in their cell walls. Gram-positive cell walls typically lack the outer membrane found in Gram-negative bacteria. Gram negative bacteria are also usually pathogenic.