title: Resistance to enzymic degradation of LH-RH analogues possessing increased biological activity.
mesh_terms: D000409:Alanine; D000818:Animals; D007987:Gonadotropin-Releasing Hormone / Q000031:analogs & derivatives*; D007031:Hypothalamus / Q000201:enzymology*; D007930:Leucine; D008715:Methionine; D010447:Peptide Hydrolases / Q000378:metabolism*; D010902:Pituitary Gland / Q000201:enzymology*; D010903:Pituitary Gland, Anterior / Q000201:enzymology*; D051381:Rats; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D014364:Tryptophan
chemical_list: D007987:Gonadotropin-Releasing Hormone; D014364:Tryptophan; D008715:Methionine; D010447:Peptide Hydrolases; D007930:Leucine; D000409:Alanine