Researchers have found that common food dye can be used to make skin, muscle and connective tissues temporarily transparent ... ultraviolet light (UV-A) and blue light. Red and orange-coloured ...

BI Answers: Why do our veins look blue? Blood is never blue - it's always some shade of red. However, veins carrying red blood may appear bluish because of how human tissue and blood reflect and ...

What happens in our body that make our veins look blue, although they are full of red blood? Follow Tech Insider: On Facebook Following is a transcript of the video: If our blood is red ...