CD80 and neoplasm: Mice inoculated with mixtures of splenocytes and 4T1 or Lewis lung developed tumours, whereas no tumour growth was observed in mice inoculated with splenocytes from pEEVGmCSF-b7.1-treated ‘cured' mice in both the CT26 and B16F10 models, indicating the protective effect was antigen-specific as observed in the in vitro analysis.