And that's exactly why people that experience hay fever have a red nose as well as a leaky nose because the capillaries become more permeable to water and we have more blood flowing to this area. And that's exactly why it appears more red than usual because of the effect that histamine has on our body. So once again, tiny pollen, microscopic pollen particles enter the air passageways of our body our nasal canal, our trachea, the bronchi and the bronchioles. And they release these tiny allergens we call antigens that flow via these epithelial cells and in two our plasma cells. And the plasma cells see these antigens as pathogenic and begin producing the corresponding complementary immunoglobulin er antibodies. Now, these antibodies then bind onto our mast cells, onto these special receptors.