We have southern blotting and we have northern blotting to basically determine exactly what the DNA molecule of interest within that mixture is. And this process is very similar to the process of Western blotting that we spoke about when we discuss proteins, their purification and their structure, and finally, computers. So the fact that we now have computers gives us an ability to basically store and catalog and quickly find any DNA sequence or any RNA sequence that we want to find. For example, in the human genome, we have over 3 billion nucleotides, and that's many, many, many nucleotides. You can imagine trying to write down all the billions of nucleotides on paper if we didn't actually have computers. But because we have computers, we have a very quick and a very efficient way of storing and accessing all the data that we collect over the years.