Tc is T cell which can give T killer cells and T helper cells. T helper cells (Th1) see the pathogen presented by antigen presenting cells (dendritic cells and macrophages). They then secrete antigens to kill the pathogen. If there is memory from previous interaction, then it will be easier to protect. However, since some viruses replicate fast (RNA particularly), this memory benefit is often lost, like in the case of influenza virus A and B types. However, I am uncertain how to explain this immunology with viruses.
How can you explain this general viral interaction better in the immune response?
I have these pictures in mind: