The first records about the healing power of certain moulds date back to ancient civilisations of Egypt, Greece and India. However, it was a Scottish doctor Alexander Fleming, who scientifically proved the potential of the mould and realised how to turn it into antibacterial substance. The discovery came by pure accident, again. In 1929, having returned from a vacation, he noticed that the blueish-greenish mould destroyed all staphylococci bacteria on a dirty Petri plate. The first man who received penicillin treatment was Albert Alexander, a constable who was infected with streptococci and staphylococci bacteria from a rose prick. Regretfully, he died. However, due to penicillin he had experienced a significant health improvement that served as an encouragement for scientists to continue their research.