To meet the emerging needs of genomics, proteomics, and the other omics, microarrays have become unique and important tools for high-throughput analysis of biomolecules. Microarray technology provides a highly sensitive and precise technique for obtaining information from biological samples. It can simultaneously handle a large number of analytes that may be processed rapidly. Scientists are applying microarray technology to understand gene expression, to analyze mutations and single-nucleotide polymorphisms, to sequence genes, and to study antibody–antigen interactions, aptamers, carbohydrates, and cell functions, among many other research subjects.