MeSH definition : Naturally occurring family of beta-lactam cephalosporin-type antibiotics having a
7-methoxy group and possessing marked resistance to the action of beta-lactamases
from gram-positive and gram-negative organisms.;
Naturally occurring family of beta-lactam cephalosporin-type antibiotics having a
7-methoxy group and possessing marked resistance to the action of beta-lactamases
from gram-positive and gram-negative organisms.