Bacterium Under Microscope

You may think these alien-looking bacteria would be unwelcome guests, but these lifeforms actually make up 90 per cent of the living cells in our bodies. As these incredible CGI images show, the human body is home to trillions of weird and wonderful lifeforms.Tube shaped escherichia coli use their three tails to swim vigorously up and down our guts, while salmonella which are famous for food poisoning scares live happily on our skin with no ill effects to us.