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: The [[measles]] [[virus]] causes causes a [[rash]], blindness and [[brain]] damage.
: [[HIV]] causes a [[disease]] called [[AIDS]] which has the symptoms of a weakened [[Immune System|immune system]] which leads to other [[infection]]s.
: [[Tobacco Mosaic Virus]] is a [[virus]] which causes [[Tomato Plant]]s Plants and [[Tobacco Plant]]s Plants to grow slowly.