Green Matters on MSN10 个月
Why Are Veins More Blue on Some People Than Others? The Science Behind This Phenomenon
For people who are very physically active or pregnant, their blood volume is higher, and their veins expand, which can make ...
Business Insider8 年
VeinViewer medical device should make drawing blood a lot less painful
An curved arrow pointing right. The VeinViewer uses a type of infrared light from an LED to make veins visible, meaning that pracitioners don't have to poke extra holes in your skin searching for ...