Deconvolution of the RNA-seq data to estimate immune cells using CIBERSORT revealed M2 macrophages, monocytes, CD4 and CD8 T cells in the tumour microenvironment (TME) of TCGA pleura samples (Fig. 5A) and the pleura and effusion samples of Creaney et al. (Fig. 5B). The gene discussed is CD4; the disease is neoplasm.