cDNA libraryplugin-autotooltip__default plugin-autotooltip_bigcDNA library: a library that is created from an mRNA sample, usually from a specific tissue source and/or cell type. The mRNAs, representing all the different genes that are expressed in that tissue, are reverse transcribed into cDNAs, which are then cloned and archived for research.: a libraryplugin-autotooltip__default plugin-autotooltip_bigLibrary: in genetics research, a library refers to a collection of clones representing a set of genetic information, e.g., a genomic library or a cDNA library. that is created from an mRNAplugin-autotooltip__default plugin-autotooltip_bigmessenger RNA (mRNA): an RNA molecule that codes for protein. sample, usually from a specific tissue source and/or cell type. The mRNAsplugin-autotooltip__default plugin-autotooltip_bigmessenger RNA (mRNA): an RNA molecule that codes for protein., representing all the different genesplugin-autotooltip__default plugin-autotooltip_bigGene: read Chapters 02, 03, 04, 05, and 06 for a definition of gene :-) that are expressedplugin-autotooltip__default plugin-autotooltip_bigExpression: a term used to describe the idea that the function of a gene is apparent and can be observed. Genes may not always be expressed all the time in all places. in that tissue, are reverse transcribedplugin-autotooltip__default plugin-autotooltip_bigReverse transcription: the formation of cDNAs from mRNAs using reverse transcriptase. into cDNAsplugin-autotooltip__default plugin-autotooltip_bigComplementary DNA (cDNA): DNA that has been reverse transcribed from spliced mRNA using reverse transcriptase. cDNA sequences are useful because they lack intron sequences and therefore contain information about the ORF of intron-containing eukaryotic genes., which are then cloned and archived for research.