Summary : This 6 minute Engliswhics about penicillin. Penicillin is a mold discovered by Alexander Fleming which can kill some bacterias which has protein in it and affective to penicillin, but these days, many bacterias are being less affective to penicillin.

Vocabulary:

antibiotic : substance that kills microorganisms

halo : circle

mould : Soft, green substance that develops on food or on objects that have been left for too long in warm moist air

chemotherapy : chemical treatment used to kill cancer cells

supresses : stops

immune system : our body's defence against infection and disease

pave the way : make something possible

resistance : ability to remain unharmed

corpses : dead bodies