Composition of an Array of Microwells with an Integrated Microfluidic System

A microarray formed in a planar surface of a moldable slab, the microarray including a plurality of microwell sets comprising a plurality of microwells formed in the planar surface of the moldable slab, each microwell being sized to contain at least a single cell, and a plurality of microchannels formed in the planar surface of the moldable slab, the plurality of microchannels being configured to permit liquid from a first region of the microarray to transit to a second region of the microarray.