Answer to Question 1
Answer: The key to the body's successful immune system is the ability to distinguish self (or proteins that belong to its body) from non-self (proteins that belong to any other living thing).
Answer to Question 2
Answer: Cytotoxic T cells directly kill virus-infected cells and tumor cells. Helper T cells secrete proteins that promote inflammation by calling for the microphages to the site, stimulating B cells, and activating the cytotoxic T cells. Regulatory T cells help lower the immune response once the infection is under control. Memory T cells remember an antigen and therefore can produce new fighting cells rapidly.
Spina bifida. (A) Spina bifica occulta; the vertebra is not complete, but there is no protrusion of
immune signaling pathways in drosophila
Foot reflexology chart indicates points on the foot that reflexively correspond to other areas of th
Relationship Between Physical Activity and Improved Health Benefits
A typical port fuel-injected system showing a vacuum-controlled fuel-pressure regulator.
Male Reproductive System - Spermatic cord