Ever wonder how something as tiny as a grain of pollen can cause your worse allergy nightmare?  This video show the allergen in action - from the time it enters your body to the point that you grab your antihistamine medicine!

Note how the allergen creates a donimo affect throughout your cells.  When pollen comes into contact with the antigen cells in your skin, it triggers the T cells to act - and the T cells in turn cause antibodies to be released - which in turn cause your nose to run and eyes to water.

Check it out!