[1] Univ Michigan, Dept Pharmaceut Sci, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA
[3] Univ Michigan, Biointerfaces Inst, Ann Arbor, MI 48109 USA
[4] Univ Michigan, Dept Biomed Engn, Ann Arbor, MI 48109 USA
[5] Univ Michigan, Program Chem Biol, Ann Arbor, MI 48109 USA