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Acorn (RISC OS) Sprite  |  1995-08-30  |  307KB  |  640x480  |  8-bit (176 colors)
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OCR: HELD The causes Disease You can become wh en your body IS invaded by .very small microbes called virus es or bacteria Quite oiten the microbes are not in themselves -harmful You get ill from the poisons the microbes make as they reproduce and grow The next page covers the main ways in which diseases are spread. HELP often reproduc mair