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Blood

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Define 'lysosome' An intracellular vesicle containing digestive enzymes
Define 'pathogen' The word pathogen is derived from 'pathos' meaning disease and '-gen' to produce. Pathogens produce disease and are an assortment of viruses, bacteria, fungi and parasites
Define 'pseudopodia' Temporary cytoplasmic extensions typical of mobile of phagocytic cells
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