Did you know that a red blood cell can make the return trip to your big toe in about 16 seconds? And that if all your blood vessels were laid end to end they would go round the world twice. White blood cells are your body's frontline defence against infection.
| Author | Albert Barille |
| Publisher | Macdonald Orbis |
| Year of publication | 1996 |
| Number of pages | 28 |
| Language | English |
| Format | Hardback |
| ISBN-10 | 748939253 |
| ISBN-13 | 9780748939251 |
| Illustrator | Albert Barille |
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