Cytokine response in sentinel immunized lymph nodes. Cytokines were measured from lymphocytes collected from sentinel immunized lymph nodes cultured for 2 days with the 6 melanoma helper peptide mixture. Arm A (patients 1-9) received 200 mcg, Arm B (patients 10-15) received 400 mcg and Arm C (patients 16-23) received 800 mcg. Cytokine cultures were performed in triplicate. All cytokine levels shown are corrected for background and negative control. The node was not able to be collected from patient #14.