What type of molecules are antibodies?

  24.  From what organ did this tissue come? [24] 25[25] 26[26]  

What is a xenograft?

AIDS stands for _____

A mild to moderate fever results in ________

  44[44] 45[45] 46. ID the structure indicated by the green arrow. [46] 47[47]  

If you read about a group of experimental animals whose T-lymphocytes were not reaching active maturity in the numbers that they should, what organ would you suspect is likely damaged? 

“Strange” molecules such as those on viruses or bacteria are usually _______

Which observation supports the “bystander effect” theory of autoimmune disease?

What is the name of an antibacterial substance found in saliva and tears?