2623393 ECLs extracellular loops 62 903700 ECL extracellular loop 53 141161 EL extracellular loop 20 921381 ELs extracellular loops 16 134654 EC extracellular domain 15 904649 ECs extracellular loops 2 2640189 EL's extracellular loops 1 2642209 ELCs extracellular loops 1 2102394 Extra-loops extracellular loops 1 2643200 eLPs extracellular loops 1