If a plate with oceanic lithosphere meets another plate, the dense oceanic lithosphere dives beneath the other plate and sinks into the mantle: this process is called subduction. The sinking oceanic lithosphere drags the rest of the tectonic plate: this is the main cause of plate motion.
You may notice a decrease in symptoms during the build-up phase, but it may take as long as 12 months on the maintenance dose to notice an improvement. If allergy shots are successful, maintenance treatment is generally continued for three to five years.
How do allergy shots work? Allergy shots help relieve allergy symptoms by changing the way your body reacts to the allergen that causes your allergy. When you get shots of the allergen, your body starts making antibodies that fight against the allergen. These antibodies help block the effects of the allergen the next time you have contact with it. Because the antibodies block the way your body reacts to the allergen, your allergy symptoms become less severe.