And now we can take this DNA molecule and place it back into that lambda phage. And the lambda phage can be mixed in with our E. Coli cells. And if the environmental conditions are right, what will happen is the lythogenic cycle will be followed, and the cell will basically divide many, many times. And every time it divides, it essentially replicates that DNA molecule. And so, at the end, we essentially have a beaker with all these cells that contain many copies of the DNA molecule of interest. And so then we can essentially break the cells down, and we can extract that DNA molecule of interest.