OriGene overexpression protein microarray chip was immunostained with ultraMAB anti-SERPINB4 mouse monoclonal antibody (Clone UMAB16). The positive reactive proteins are highlighted with two red arrows in the enlarged subarray. All the positive controls spotted in this subarray are also labeled for clarification. These data show that ultraMAB anti-SERPINB4 (Clone UMAB16) very specifically recognizes SERPINB4 antigen on OriGene protein microarray chip.