His research mainly focuses on the plantigradism of mammals.

He learned about unguligradism in his zoology class.

She has polycystic ovary syndrome.

My younger brother caught the influenza.

This material has high corrosion resistance.

He was diagnosed with bipolar disorder.

He is writing a thesis on monotheism.

Sufficient caution is necessary when handling radioactive materials.

The success of this project is influenced by a lot of uncertainty.

The prevention of venereal diseases is most important in safe sexual behavior.