This antigen triggers a specific immune response.

This vaccine contains the antigen of the new coronavirus.

The only source of light in this room is natural light from the window.

He made an oath, swearing never to repeat that mistake again.

He declared his candidacy publicly.

Collagen is an important component for keeping our skin and bones strong.

We are using renewable energy to protect this forest.

Therefore, he decided to wake up early.

The Commonwealth of Independent States is an intergovernmental organization formed by part of the former Soviet Union.

In Buddhism, this Buddha statue is considered a great treasure.