1046 chip

A cDNA Microarray ("Gene Chip"): measuring variation in RNA expression

    This array includes 1,046 different DNA oligonucleotides, each specific for a particular cDNA sequence generated from the mRNA transcriptome of a particular tissue. The cDNAs are fluorescently labelled and applied to the chip.  Quantitative patterns of gene activity are indicated by pseudocolours: high levels of binding (and thus high levels of mRNA expression) are indicated by "hot" or "warm" signals, while "cool" and "cold" signals indicate low expression.

Figure modified from 2000 by Griffiths et al. ; All text material 2013 by Steven M. Carr