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| 3D rendered image of translucent cells dividing |
Our bodies contain approximately 10 quadrillion cells (10 x 10^15). In addition, we are host to a further 100 quadrillion bacterial cells.
Each of our cells (well, over 99.99% of them at least) contain a string of DNA almost 2 metres long with 3.2 billion base pairs (where a base is one of adenine (abbreviated A), cytosine (C), guanine (G) and thymine (T)).
Each cell typically contains twenty thousand different types of protein and a minimum of 100 million protein molecules.
From: Bill Bryson: A Short History of Nearly Everything
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