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Which of the following apply to helper Regulatory T celI?
a) Involved in peripheral tolerance and prevention of autoimmune responses
b) Involved in the activation of macrophages and NK cells
c) CD8
d) Orchestrate humoral and cellular immunity
e) APCs or infected nucleated cells presenting antigens associated with MHC I
f) Destroy cells infected with intracellular pathogens
g) APCs presenting antigens associated with MHCII
h) CD4