16. Put the following events in the correct sequence. a. TH cell recognizes the foreign antigen and secrete interleukins b. plasma cells secrete antibodies c. B cell recognizes a surface antigen on pathogen and binds to it d. B cell divides rapidly and the daughter cells differentiate into plasma cells e. B cell displays the foreign antigen on MHC-II f. B cell engulfs pathogen by receptor- mediated endocytosis 17. Put the following events in the correct sequence. a. TC cell secretes perforins and granzymes that are directed at the infected cell b. TH cell recognizes the foreign antigen and secretes interleukins to stimulate the TC cell c. Tc cell divides rapidly d. Tc cell recognizes an antigen on the MHC-I of an infected cell and binds to it 18. Put the following events in the correct sequence. a. TH cell divides rapidly b. TH cell recognizes the foreign antigen being displayed and binds to it c. Antigen Presenting Cell costimulates the TH cell d. TH cell secretes interleukins to stimulate and activate other immune cells e. Antigen Presenting Cell displays foreign antigen on its MHC-II.

1. 16. Put the following events in the correct sequence. a. TH cell recognizes the foreign antigen and
secrete interleukins b. plasma cells secrete antibodies c. B cell recognizes a surface antigen on
pathogen and binds to it d. B cell divides rapidly and the daughter cells differentiate into plasma
cells e. B cell displays the foreign antigen on MHC-II f. B cell engulfs pathogen by receptor-
mediated endocytosis 17. Put the following events in the correct sequence. a. TC cell secretes
perforins and granzymes that are directed at the infected cell b. TH cell recognizes the foreign
antigen and secretes interleukins to stimulate the TC cell c. Tc cell divides rapidly d. Tc cell
recognizes an antigen on the MHC-I of an infected cell and binds to it 18. Put the following events
in the correct sequence. a. TH cell divides rapidly b. TH cell recognizes the foreign antigen being
displayed and binds to it c. Antigen Presenting Cell costimulates the TH cell d. TH cell secretes
interleukins to stimulate and activate other immune cells e. Antigen Presenting Cell displays
foreign antigen on its MHC-II