And this is shown in the following diagram. So once we carry out the admin degradation process the first time, we can repeat this procedure four more times to basically determine the entire sequence of amino acids. And this is shown here. So this peptide here is this peptide here. So we have arginine, we have phenylalanine, we have glycine, we have aspartate, and we have glycine. So we take this, we mix it with our phenol isotiocyanate, we label it in step one, and in step two, we remove it.