And once we attach the sticky ends, we can place it into the appropriate vector, either a plasmid, or we can stick it into a lambda phage. And then we can expose the lambda phage to bacterial cells. Those bacterial cells will take up those double stranded cDNA molecules, and they can use them to basically transcribe. The modified mRNA molecule that has the polyatail, contains the five prime end and also contains only the exons, not the introns. And in this manner, our bacterial cell can synthesize any protein that we desire. And so once the proteins are synthesized, we can extract those proteins by protein purification methods.