“…Tyro3 predominates in mouse and human central nervous systems (CNS) [16,17], but it is also expressed by platelets [18], the heart [19], ovaries and testis [20], breasts [21], osteoclasts [22], and the retina [23]. Axl is widely expressed in many tissues and organs, including the brain [24], liver [25], kidney [26], heart [19], monocytes/macrophages [27], and endothelial [28] and vascular smooth muscle cells [29]. Finally, MerTK is the main mediator of Gas6 activity on immune cells [30,31], but is also expressed by the brain [24], platelets [32], gonads and prostate [33,34], lung [35], retina [23], kidney [36], and heart [19].…”