I am majoring in cytology at university.

Olfactory cells play an important role in allowing us to sense smells.

Olfactory cells play a role in sensing smells in the nose.

Neurons are responsible for transmitting information in the brain.

Macrophages play a role in taking in and breaking down foreign substances in the body.

Oocytes play an important role in the reproduction of organisms.

Multicellular organisms, unlike unicellular organisms, have specialized cells in their bodies that perform functions.

The study of nucleons is an important field in science.

Nuclear fusion is expected to be a future energy source.

It is reported that North Korea has conducted another nuclear bomb test.