Biology and Biotechnology Program, Lawrence Livermore National Laboratory, CA 94550, USA.|Biology and Biotechnology Program, Lawrence Livermore National Laboratory, CA 94550, USA.|Biology and Biotechnology Program, Lawrence Livermore National Laboratory, CA 94550, USA.|Biology and Biotechnology Program, Lawrence Livermore National Laboratory, CA 94550, USA.|Biology and Biotechnology Program, Lawrence Livermore National Laboratory, CA 94550, USA.