Daniel Berensen defended this thesis last Thursday. Congratulations! It is always so nice to see work reach its conclusion and achievements rightly earned and awarded. We also got excellent reviews for his paper which we should turn around in a week or so (a small miracle - much appreciated). Then he will continue the next phase of his education in the MD program at Stanford. We wish him all the best in his future endeavors (just finish those last experiments for the Rb dilution manuscript first).