I'm worried about his health condition.

He is in a state of fatigue.

Astrocytes are one of the important support cells in the brain.

The tree is the biggest tree in the park.

Jyu is my best friend.

Naoki is my best friend.

This cell is dividing very actively.

Gender roles are an important element in defining individual behavior in society.

His role is to fulfill his responsibilities as a leader.

It is important to understand the importance of health.