In addition, TYRO3 and AXL co-immunoprecipitated from cell lysates derived from Rat2 cells with exogenous TYRO3 expression [9] and from a gonadotropin-releasing hormone (GnRH) expressing neuronal cell line, and human glioblastoma and colorectal cancer cell lines expressing endogenous TYRO3 and AXL [17,72,91]. Here, AXL is linked to colorectal cancer.