We further verify that expression of three genes identified from our scRNA-seq analyses, thymosin beta 10 (TMSB10), CD74 and GPX1, are expressed at the protein level in hybrid cells within patient-matched primary tumor and peripheral blood (n = 4; n = 1 GEP class 1 and n = 3 GEP class 2). The gene discussed is CD74; the disease is neoplasm.