Review the animation and answer the questions that follow to test your understanding.

1		Superantigens
			A)	bind specifically to T helper cell receptors
			B)	bind without antigen specificity to the outer portion of T helper cells and antigen presenting cells (APCs)
			C)	are bound inside specific MHC II antigens on APCs
			D)	bind to about 1 in 10,000 T cells
			E)	do not stimulate as many T helper cells as do antigens that bind with greater specificity
2		Superantigens are produced by
			A)	superantibodies
			B)	Staphylococcus aureus in T cell dependent cytolysis
			C)	Staphylococcus aureus in toxic shock syndrome
			D)	E. coli in toxic shock syndrome
			E)	cells infected with specific viruses
3		Possible symptoms of toxic shock syndrome include
			A)	fever
			B)	diarrhea
			C)	nausea and vomiting
			D)	shock
			E)	all of the above
4		Toxic shock syndrome is a mild disease similar to other mild allergic reactions.
			A)	True
			B)	False
5		Superantigens are processed by antigen presenting cells.
			A)	True
			B)	False