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| It was reported that there are 1,407 pathogens that can infect humans. These included viruses, bacteria parasites, protozoa and fungi. (SFC, 2/20/06, p.A2) At least 800 types of bacteria live in the human gut. The collective genome of these organisms contains 100 times as many genes as the human genome itself. (Econ, 6/3/06, p.78) |
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