"The ancient Egyptians treated some patients by eating moldy bread, and no one understood why.modern science arrived if the scientist Alexander Fleming discovered that penicillin had a great effect as an antibiotic in bacteria." What is the relationship of bread to the subject? "When bread rots, it secretes a fungus called Penicillium, from which penicillin is derived, the most famous antibiotic used to treat some types of bacteria known to the Egyptians 5,000 years ago. ✍️