is 216.10 KB, has a resolution of 600x513 pixels and was uploaded on March 29, 2020 @ 12:56 pm by user: uteklein. It is filed under the tags: heparin, artwork, plateletderived growth factor, chemokine, crystal structure. Click the blue button at the top to freely download: Platelet Factor 4 CXC Chemokine Receptors Heparin png.