Fig. 2
From: Single-cell omics traces the heterogeneity of prostate cancer cells and the tumor microenvironment
Cold tumour vs hot tumour. A A cold tumour is a kind of immune cell suppressive tumour with few immune cells inside and in the tumour microenvironment, or the immune cells are difficult to penetrate. B A hot tumour is an immune cell infiltrating tumour, there are many immune cells near the tumour tissue, and the antagonism between tumour cells and immune cells is more active than a cold tumour.