New soft contact lenses use upconversion nanoparticles to convert infrared light into visible light. Unlike night-vision ...

Microneedling with PRP (Platelet-Rich Plasma) is a skincare treatment that uses tiny needles to create controlled ...

Please bleed more, I thought, looking at my pricked finger. A drop of blood dangled at its tip, not quite big enough to fall. I needed enough blood to fill a small circle outlined on a piece of paper.