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What specifically would happen to an individual human who lost their helper T cells?  Provide a real-world example of this.

Sulfonamides are analogs of PABA and, as a result, they inhibit _____ synthesis. 


Which of the following is a current theory toward explaining the origin of autoimmune diseases? 

Mycobacterium tuberculosis has chemicals in its cell wall that inhibit the fusion of phagocytic vacuoles with lysosomes.  Which statement is then most likely to be true?  

What structures are found along lymphatic vessels and are heavily clustered in the armpit, groin, and neck? 

Human red blood cell types involve all of the following EXCEPT:

All of the following are autoimmune diseases except 

Which of the following is the term for a special binding substance (often “alum” aluminum salts) that enhances immunogenicity and prolongs antigen retention at the injection site, helping make a stronger immune reaction? 


A patient enters your clinic with a suspected helminthic (parasitic worm) infection.  In support of this diagnosis, you suspect elevated levels (titer) of which antibody in the patient’s serum?

Which component in the figure above is the “Antigen” in this drawing of a direct ELISA (Enzyme Linked Immunosorbent Assay) happening in the well of a plastic dish?