1393061 PBN parabrachial nucleus 433 335442 PB parabrachial nucleus 120 1392643 PBL parabrachial nucleus 17 3213796 PBel parabrachial nucleus 9 3214751 PBNc parabrachial nucleus 2 3697932 PBNel parabrachial nucleus 2 3214645 PBNl parabrachial nucleus 2 3213475 PBcl parabrachial subnucleus 2 1390718 PBA parabrachial nucleus 1 3700985 PBN-SL parabrachial nucleus 1 3698180 PBNle parabrachial nucleus 1