A cDNA microarray is a hybrid of a DNA microarray, which is a collection of a number of minute DNA dots. These are mostly used in the field of genetic testing.

mRNA is extracted from cells for DNA microarray.

the mRNA is then converted in the lab to cDNA

this cDNA is allowed to interact with the probes on the microarray chip

it works by chips

Otherwise known as "microarray chips," DNA microarray are used to determined the genetic makeup of a given tissue sample. By shining various bands of light on these chips, the gene(s) in the tissue are expressed in the form of a particular color.

DO STEKEL has written:

'MICROARRAY BIOINFORMATICS'