So this orange section is basically part of that lambda phage DNA molecule. And this molecule has been inserted into that lambda phage molecule. And then we can follow that with each one of these molecules, we can create the following five recombinant DNA molecules. And now we can take these recombinant DNA molecules and place them into those lambda phages, the bacteriophages, that are now ready to infect our bacterial cells. And so now we have this army of these unique lambda phages that each contain their own unique recombinant DNA molecule. And so in step five, we can actually take a bacteriophage, we can infect these lambda phase, we can infect those bacterial cells that equalize cells with these different types of lambda phages.