Which molecule on the surface of sensitized T-cells binds to the 'Fas' receptor on target cells to induce apoptosis in Type IV hypersensitivity?
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Correct answer: Fas ligand (FasL)
Cytotoxic T-cells can induce apoptosis in target cells via the Fas-FasL pathway. FasL on the T-cell binds to Fas on the target cell, activating caspases and leading to programmed cell death.
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