Another example is that in breast cancer, tumor‐infiltrating CD103+ CD8+ T cells were also separated into 2 clusters by scRNA‐seq analysis, with 1 cluster expressing higher level of both effector molecules and inhibitory receptors (such as PRF1 and GZMB; HAVCR2 and LAG3) and the other cluster expressing genes related to cell proliferation (such as CCNA2 and TUBB).128. This evidence concerns the gene CD8A and neoplasm.