Microarrays are revolutionizing genetics by making it possible to genotype hundreds of thousands of DNA markers and to assess the expression (RNA transcripts) of all of the genes in the genome. Microarrays are slides the size of a postage stamp that contain millions of DNA sequences to which single-stranded DNA or RNA can hybridize. This miniaturization requires little DNA or RNA and makes the ...

a long-lasting problem in the analysis of tissue samples is the time-consuming and repetitive process of histologic preparation and pathologic review of tissue sections. these two critical factors, innate nonuniformity in preparation and subjectivity of analysis, therefore limit the scientific and statistical thoroughness of tissue based studies. employing tissue microarray (tma) technique prov...