Peptides Containing The Sequence (tyr-gly-gly-phe-met-thr-ser- Glu Lys-ser-gln-thr-pro- Leu-val-thr-leu-phe-lys-asn- Ala-ile-ile-lys-asn Ala-his- Lys-lys-gly-glu-oh), E.g., B-endorphin Or Related Peptides (c07k-99/62) Patents (Class 930/DIG720)