The pineal gland is a very small gland that exists in the brain.

The bulbourethral gland is one of the important glands in the male reproductive system.

The Skene's gland is a part of the female reproductive system, and its function is not yet fully understood.

The Bartholin's gland is a part of the female reproductive system and primarily secretes lubricating fluid.

The Skene's gland is a part of the female reproductive system, and its function is not yet fully understood.

The bulbourethral gland plays an important role in the male reproductive system.

I use mouthwash every day after brushing my teeth.

Cerebrospinal fluid plays an important role in protecting the brain and spinal cord.

Kazuya is my best friend.

Learning about the history of Shuyu-shi is very interesting.