Penicillin

Penicillin was discovered by a accident in 1928 by the scottish bacteriologist Sir Alexander Fleming. When he was working with bacterial on St. Mary´s hospital in London, was one of his petridishes  with staphylococcus aureus defile with a fungus. He observe that the bakterial could not grow  close to the funguscolony. He identify  fungus as Penicillium chrysogenenum. He begin to grow the fungus and discovered that the fungus was antibacterial for many diseasescause bacterials. This drug has saved more lives than the number lost in all the wars of history.