T cell receptor, Cytotoxic T Cell, CD4, Antigen, Bacterium,
B – cell, Cell mediated response, Class II MHC, Cytokines, and Humoral Response
are the components for the activation of a helper t cell by a dendritic cell.
A. Sharks store enough urea to match the total solute concentration of the surrounding seawater
Answer:
A is the answer as to my knowledge