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The T cell activation for their action against tumour antigens requires which of the following conditions?

The T cell activation for their action against tumour antigens requires which of the following conditions? Correct Answer It requires two signal process

T cell activation requires two major signals. These signals are termed as signal 1 and signal 2. T cell activation is delivered with the first signal by carrying out the interaction between TCR and peptide antigens that are associated with MHC molecules. On the other hand, the second signal is delivered for the activation process by various co-stimulatory mechanisms like binding between CD28 and T cells.  

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