538289 beta-EP beta-endorphin 567 2256157 beta-END beta-endorphin 257 40773 BE beta-endorphin 145 3306896 beta-E beta-endorphin 66 678379 BEP beta-endorphin 39 925814 END beta-endorphin 30 2251942 beta h-EP beta-endorphin 29 2393795 BEND beta-endorphin 27 144730 EP beta-endorphin 19 538212 beta-ED beta-endorphin 9 678150 B-EN beta-endorphin 8 678440 B-Ep beta-endorphin 7 538285 beta-EN beta-endorphin 7 566389 beta-ENDi beta-endorphin 6 2255794 beta-EPH beta-endorphin 6 538585 betah-E beta-endorphin 3 2393806 B-End beta-endorphin 2 678540 BER beta-endorphin 2 143339 EN beta-endorphin 2 2648197 ENDO beta-endorphin 2 678445 bEP beta-endorphin 2 1819089 beta h-End beta-endorphin 2 3885811 B-endor beta-endorphin 1 2943968 B-endorphin beta-endorphin 1 2393557 BE-IR beta-endorphin 1 2394755 BETA beta-endorphin 1 2399458 Bh-EP beta-endorphin 1 2255995 beta E-ir beta-endorphin 1 2251938 beta h-ER beta-endorphin 1 565310 beta-EP-IR beta-endorphin 1 2255858 beta-ERP beta-endorphin 1