Are superantigen reactions beneficial or harmful to the host? What is different about a superantigen reaction compared to normal antigen-host cell interactions?
Differentiate between T-cytotoxic (TC) cells and T-helper (TH) cells.
A child is stung by a bee at the beginning of the summer and has mild swelling and itching at the site of the sting. In late summer, the child is stung again, but this time rapidly develops anaphylaxis and is diagnosed with type I hypersensitivity to bee venom. If the child is allergic to bee venom, why was there no reaction after the first bee sting? What specifically happened after the first sting that led to the allergic reaction?
A woman is being treated for systemic lupus erythematosus (SLE). She has an increased risk of opportunistic infections. Based on what you know about SLE and the treatment for it, propose why she has an increased risk of opportunistic infections.