How much is 4qt in gallon?

When the body recognizes a relatively harmless substance as a dangerous antigen and mounts an immune response this response is called what? Why are capillaries found in alveoli nephrons and villi? What elements is it made of? Is mt Wrangell on the ring of fire? Are genes related to addiction? How likely is it to have a down syndrom baby? What would happen if a sound signal patterns pitch was increased but the volume stayed the same? What is 6 times 6 times 5? What song starts with shaking all the broken pieces? What is a mixture in which no more can dissolve? Why is an egg cell smooth and spherical? The change from negative to positive and from positive to negative in an alternating current? When were you made? What function do sense organs serve? What is the point at which a nerve impulse is sent from one nerve cell to another? What metric unit would you use to measure a fly? What is the deposition for Edwards plateau? Can shock make your hair white? How can human stem cells be used? What medication should you take to control your blood cholesterol levels?