They screened these by assuming that a tastereceptor would only be found in a small number of tissue types (specifically tongue taste cells). That whittled the list down to 900.
他们通过假设味觉受体应该只在很少种类的组织(特别是舌味觉细胞)中被发现，把名单缩减到900个。
2
Teixeria has already determined that the sweetness of thaumatin is related to the specific charges across a large surface area over which thaumatin can bind to the principle human tastereceptor.
Swabs were also taken of the volunteers' cheek cells so that researchers could determine whether they carried none, one, or two 'sensitive' copies of the tastereceptor gene that allows taste of PTC.