Unformatted text preview: infection had been conquered by the immune system. Many early treatments
consisted of ways of making patients sweat, in the belief that the patient would “sweat out” the fever. Even
today, some people believe that sweating or special products will remove “toxins” from the skin, though such
claims are usually vague about what those “toxins” are supposed to be.
• Students often learn that “kidneys filter the blood.” Filtration occurs at the glomerulus where the primary
filtrate (plasma) moves into the nephron, but osmosis and active transport are used to “clean” the blood...
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