Read Aloud the Text Content

This audio was created by Woord's Text to Speech service by content creators from all around the world.

Text Content or SSML code:

1. Phagocytosis of bacteria and other invaders by white blood cells and cells of the tissue macrophage system, 2. Destruction of swallowed organisms by the acid secretions of the stomach and the digestive juices 3. Resistance of the skin to invasion by organisms 4. In the blood of certain chemicals and cells attach to foreign organisms or toxins and destroy them.