Who used a microscope to see blood capillaries in the tail of a fish?
robert hooke
aristotle
marcello malpighi
antony van leeuwenhoek

Marcello Malpighi was the person who used a microscope to see blood capillaries in the tail of a fish.
He was a famous Italian scientist of the 17th century, and is known as 'the father of microscopical anatomy, histology, physiology, and embryology,' so he is definitely the correct answer. Many terms in biology are actually named after this biologist.

To kill bacteria from our body especially from stomach