What cells are activated to cause this cellular immune response, and what are their basic functions in fighting this infection?

Mr. Jones has been diagnosed with a skin infection of the left middle finger. Upon assessment, you note that the finger is red, swollen, tender to touch, and painful to move.

a. Explain how these assessment findings are a normal part of the inflammatory response to a foreign organism invasion.

b. What cells are activated to cause this cellular immune response, and what are their basic functions in fighting this infection?