Two Color Microarray

**Semantic type:** Molecular Biology Research Technique

**Definition:** A genomic microarray-based method using cDNA from two samples, labeled with two separate fluorophores/dyes at different emission wavelengths, and hybridized to a single microarray for laser excitation in a microarray scanner. Relative fluorescence intensity of each dye can be measured and used in log- or intensity- ratio based comparative analysis for gene expression between the two experimental conditions.

**Synonyms:** - Dual-channel Microarray - TWO-COLOR MICROARRAY - Two-channel Expression Array - Two-channel Microarray - Two-color Microarray-based Gene Expression