meticillin antibiotic drug (beta-lactam class) molecule. mrsa stands for methicillin-resistant staphylococcus aureus

meticillin meticilline methicillin methicilline resistance resistant antibiotic antibacterial antimicrobial infection bacterium bacteria microbe microorganism mrsa hospital outbreak staphylococcus aureus narrow spectrum beta lactam lactamase penicillin molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula circle ring line drawing skeletal