How to Use "leech" with Example Sentences

1. The leech stands the photo session with dignity .
2. They add leech saliva into their cosmetics .
3. The bloodletting may last from 10 minutes to 1 hour and after the leech is full it will fall off by itself .
4. In the photograph you see a leech model and tools to extract its saliva .
5. Apart from the saliva , they add the leech itself into their cosmetics .