Introduction: Nitric oxide (NO) modulates the adhesivity of RBCs to endothelial cells (ECs), which may interfere with blood respiratory function and promote tissue injury in sickle cell disease and ...

It's a win-win, and it's why everything on iStock is only available royalty-free — including all Abstract images and footage. What kinds of royalty-free files are available on iStock? How can you use ...

Abstract: The article was motivated by J. Blinn's column on the many ways to draw a circle (see ibid., vol.7, no.8, p.39-44, 1987). The authors have found several other ways to represent the circle as ...

Abstract background, magic lights and sparks turning in space, seamless loopable. Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects ...