Our poly A+ RNA is enriched for mRNA transcripts with two rounds of oligo(dT) cellulose purification. The mRNA is isolated from our total RNA collection, which is meticulously prepared to high quality using our proprietary modified guanidinium thiocyanate method. We offer an extensive selection of poly A+ RNA from human cancers such as leukemia, lymphoma, and melanoma, and also from human cancer cell lines.