ERBB2 and neoplasm: Using IFN-γ ELISpot performed on peripheral blood lymphocytes isolated from 4T1.2 or 4T1.2-HER2T tumour-bearing mice, each stimulated with either 4T1.2 or 4T1.2-HER2 lysates, no appreciable differences in overall antigenic response were observed (Figure S2I).