His body is very healthy.

This pathogen is very dangerous to humans.

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

His body is very healthy.

He made three robots.

He exercises his body every day.

His body looks like that of an athlete.

His body build is like that of a sports player.

The study of filterable pathogens is an important part of virology.

When you catch a cold, the mucous membrane in your nose swells up.