Reaction site array with a black matrix to decrease cross-contamination between reaction regions

摘要

A reaction site array to be used in conducting a plurality of reactions between two or more kinds of substances in a liquid medium with a trace amount is provided. The reaction site array comprises a plurality of reaction sites separated each other, each of the reaction sites is composed of a first region and a second region, the second region is raised from the first region to separate the first regions each other, and the first region has an affinity to the liquid medium and the second region has an affinity to the liquid medium lower than that of the first region. A preparation process of the reaction site array and a reaction process using the reaction site array are also provided.