Figure 2From: Novel design and controls for focused DNA microarrays: applications in quality assurance/control and normalization for the Health Canada ToxArray™Schematic of the design of one sub-grid and its relative position on a slide of the ToxArray™. Each sub-grid is printed in quadruplicate by one pin. For example, all of the spots in sub grids numbered 1 are printed by the same pin.Back to article page