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Why does our body have to do so much to keep our blood clean? We have at least half a dozen organs that are devoted almost only to that task like the lymph nodes, liver, kidneys, spleen. Most other organs like lungs and intestines serve that role in secondary ways. I just think about how plants have no organs for this and they are also porous and can't clean themselves yet whatever flows through their capillaries which gets pulled right out of the shit and bug and mold infested ground is apparently clean, yet we need a state of the art 12-stage filtration system?
