People with strong general immunity are less likely to catch a cold.

Mucosal immunity plays a crucial role in protecting our bodies from pathogens.

He understands the importance of learning.

He is majoring in psychology.

Gaku is my best friend.

He has a deep interest in archaeology.

He likes to take a walk in the park at dusk.

She has an autoimmune disease.

My brother has been taking immunosuppressants after his transplant surgery.

He thoroughly researched the history of that nation.