II. Cephalosporins A First generation cephalosporins B. Second generation cephalosporins C. Third generation cephalosporins D.The fourth generation cephalosporinsII. Cephalosporins ◼ A. First generation cephalosporins ◼ B. Second generation cephalosporins ◼ C. Third generation cephalosporins ◼ D.The fourth generation cephalosporins