Scientists at the Francis Crick Institute have generated human stem cell models which, for the first time, contain notochord—a tissue in the developing embryo that acts like a navigation system, ...
It could also be used to make human tissues and organs transparent, though it is unlikely to be used to make an entire human body transparent ... the mouse's nervous system, gut or lymph system.
It is a millimeter long and as wide as several human hairs. It is also transparent ... Its body consists of just 959 cells. It has no lungs, liver, kidneys, eyes or circulatory system.