Gene expression patterns are now used to characterize tumor types. What method is appropriate for analysis of expression of many genes simultaneously?

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Gene expression arrays allow for the simultaneous analysis of expression of many genes, making it an appropriate choice for characterizing tumor types based on gene expression patterns. Northern blots only allow for the analysis of one gene at a time, and slot blots are used for quantifying specific DNA or RNA sequences. CGH arrays are used for detecting copy number variations in DNA.

Gene Expression Patterns Are Now Used to Characterize Tumor Types