What is a CDNA library?
It is a set of different genes represented as cDNA. You can • obtain this library of cDNA from public databases or • attempt to use cDNA that corresponds to the RNA from a particular tissue or stage of development. DNA libraries can be obtained through a DNA subtraction e.g. when you build a DNA library for your microarray, you perform a DNA subtraction between the wild type organism (i.e. the normal organism) and the mutant type to obtain a library of `interesting genes’ – those that are present in the mutant but not the wild type or vice versa.
