MZB1 and cancer: The following cell populations were identified: epithelial/cancer cells (EPCAM+, CK18+), endothelial cells (PECAM1+, VWF+), stromal cells (LUM+, DCN+), mast cells (CPA3+, TPSAB1+), myeloid cells (LYZ+, CD68+), CD8+ T cells (CD3D+, CD8A+), NK cells (FCGRA1+, NKG7+), B-cells (CD79A+), CD4+ T-cells (CD3D+, CD4+), and plasma cells (CD79A+, MZB1+) (Fig. 1D).