Willy is allergic to ragweed pollen. He has read about a medication that blocks certain antibodies. Explain how this treatment can alleviate his allergy.
Paula's grandfather has been diagnosed with lung cancer. His physician orders biopsies of several lymph nodes from neighboring regions of the lungs. Paula wonders why the biopsies are necessary. Explain why.
Mr. Johnson is a 60-year-old man with severe kidney disease. His kidney disease has caused hypoproteinemia due to the filtration of, and subsequent loss of, protein in the urine. He also has swollen arms and legs. Is it possible that the swollen limbs are linked to his kidney disease?