I'd like to pay this in, please http://www.rookeryschool.co.uk/stmap_0a500.html?ditropan.symmetrel.cialis.azathioprine epo boost pills Chemicals in the food, known as tastants, make contact with the 30-100 taster receptor cells inside each taste bud. These stimulate nearby sensory neurons, which send a signal to an area at the back of the brain. This process creates five main taste sensations - sweet, salty, sour, bitter and umami (savoury).