IFNG and neoplasm: A potential explanation for this finding is that both Daudi and Raji cells express receptors for IFN‐γ, suggesting that any IFN‐γ released by Vδ2+γδ T cells in response to tumour may be taken up by the tumour cells themselves, and as such will not be present within supernatants to be detected by ELISA.38, 39