16. Why is a second signal useful inT cell activation? 17. Select all the false statements...

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16. Why is a second signal useful inT cell activation? 17. Select all the false statements about artificially acquired immunity. a. It can be passive. b. It can be active. c. It may be generated by vaccines. d. It is a form of autoimmunity. e. It may generate memory cells. f. An example includes the transfer of antibodies across the placenta. 16. Why is a second signal useful inT cell activation? 17. Select all the false statements about artificially acquired immunity. a. It can be passive. b. It can be active. c. It may be generated by vaccines. d. It is a form of autoimmunity. e. It may generate memory cells. f. An example includes the transfer of antibodies across the placenta.

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1 Second signal is costimulatory and is non antigen no... View the full answer