CK-12 Foundation
Ck 12: Inflammatory Response and Leukocytes
[Free Registration/Login may be required to access all resource tools.] Whenever the skin is broken, it is possible for pathogens to easily enter your body. They get past the first line of defense, and run into the second line of...
CK-12 Foundation
Ck 12: Biology: Inflammatory Response and Leukocytes
[Free Registration/Login may be required to access all resource tools.] Discusses the second line of defense of the immune system.
CK-12 Foundation
Ck 12: Life Science: Inflammatory Response
[Free Registration/Login may be required to access all resource tools.] A scrape is a break in the skin that may let pathogens enter the body. If bacteria enter through the scrape, they could cause an infection. These bacteria would then...
CK-12 Foundation
Ck 12: Biology: Immune System Part I Study Guide
This study guide on the immune system covers key terminology and the different lines of defense the human body has to protect itself against pathogens. It is available for download with free registration.