The Jackson Laboratory, 600 Main Street, Bar Harbor, ME, USA. Joao.Ascensao@rice.edu.|The Jackson Laboratory, 600 Main Street, Bar Harbor, ME, USA. Mary.Dolan@jax.org.|The Jackson Laboratory, 600 Main Street, Bar Harbor, ME, USA. David.Hill@jax.org.|The Jackson Laboratory, 600 Main Street, Bar Harbor, ME, USA. Judith.Blake@jax.org.