Source:http://linkedlifedata.com/resource/umls/id/C1515564
NCI: Methods for building collections of cloned DNA consisting of DNA copies of all the mRNAs produced by a cell type. cDNAs are generated using reverse transcriptase and either an oligo-dT or random primer. The copies are inserted into a bacterial plasmid or bacteriophage vector. The library can be maintained as a pooled population or as an arrayed library.