Spreading cancer caught on film

The spread of every single cancer cell around the body has been captured in videos by a team in Japan.

The normal body tissues show up as green, while the cancer comes out as intense red spots.

The team at the University of Tokyo and the RIKEN Quantitative Biology Center says the technology will help explain the deadly process of cancer spreading.

The research is on mice so far, but it is hoped the method could one day help with treatment too.