It is no doubt
that mankind history is full of important and significant events and inventions.
To my mind, one of the most important inventions is penicillin. A scientist named
Alexander Fleming was doing research at Hospital in London and he was looking
for something to fight bacterial infections.
Use of
penicillin did not begin at once. Howard Florey and Ernst Chain isolated the
active ingredient and developed a powdery form of the medicine. So they were
able to make enough penicillin to establish it as a value drug. The world now
had a valuable treatment that would save the lives of millions.
Penicillin today
is a very important prescription drug. It is very effective against fungi,
parasites and bacteria.