What happens after activation of T cells
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Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses. They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.

Explanation:

Helper T cells become activated when they are presented with peptide antigens by MHC class II molecules, which are expressed on the surface of antigen-presenting cells (APCs). Once activated, they divide rapidly and secrete cytokines that regulate or assist the immune response.

Enhance: calcium ions, fibrinogen, serum, thrombin, tissue factor.

Inhibit: heparin, thrombin, coumadin, vitamin K8, PF3, aspirin.

Explanation:

Hope it helps.