He is suffering from liver disease.

The sheep was quietly eating grass.

He is raising a sheep.

He looked at the flock of sheep and felt at ease.

I am majoring in parasitology at university.

Vermiculite, in mineralogy, is a type of mineral and is used for various purposes due to its characteristics.

This parasite lives inside the human body.

I plan to go on a test of courage with my friends tonight.

He is scheduled to undergo liver transplantation surgery.

The doctor recommended a blood test to check my liver function.