(CNN)– In the years before penicillin came into wide use in the 1940s, medicine couldn’t do very much for many of the sickest patients. A hospital could keep you warm and provide food and nursing care, but as surgeon and writer Atul Gawande …
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6-aminopenicilanic acid(6-APA)|Ampicillin|Amoxicillin|semisynthetic penicillin series|7-ADCA|Cephalosporin series