ABCA1 and neoplasm: The correlation between 24 tumor-infiltrating immune cells and B7-H4 mRNA expression was shown in Fig. 3A. It can be found that NK CD56bright cells, Tcm, Th2 cells, iDC, Macrophages, CD8+ T cells, Tgd, T helper cells, Mast cells, NK cells, TFH, Th1 cells, neutrophils, T cells, cytotoxic cells, Tem, aDC and DC were positively correlated with B7-H4 mRNA expression.