So in experiment number one, you take your seven amino polypeptide, you expose it to trypsin. And what trypsin does is it essentially cleaves at the carboxyl end of lysine and arginine. And what you obtain is these three fragments. Then you isolate these fragments and you conduct admin degradation on each one of these fragments and you find out that the first fragment is glycine tryptophan, arginine. The second fragment is tyrosine, lysine, and the third fragment is aspartate and serene. Now you take that same polypeptide and now you expose it to a different proteolytic enzyme, in this case, Chimetrypsin.