The PDGF receptor is a type of protein found on the surface of cells that binds to platelet-derived growth factor (PDGF). This interaction triggers a series of cellular responses, including cell growth, division, and survival. PDGF receptors play a crucial role in various biological processes, such as wound healing and tissue repair. There are two main types of PDGF receptors: PDGFR-α and PDGFR-β. These receptors are involved in the development of blood vessels and the regulation of connective tissue. Abnormal activation of PDGF receptors has been linked to several diseases, including certain types of cancer and fibrotic disorders.