Presence of morphine and morphine-6-glucuronide in the marine mollusk Mytilus edulis ganglia determined by GC/MS and Q–TOF–MS

Opiate-like substances in an invertebrate, an opiate receptor on invertebrate and human immunocytes, and a role in immunosuppression.

George B. Stefano, A. Digenis, S. Spector et al. · Proceedings of the National Academy of Sciences · 1993 · 211 citations · Full text

Opiate-like Substances, Immunology, Pharmacotherapy +21

Antibodies as a means of isolating and characterizing biologically active substances: presence of a non-peptide, morphine-like compound in the central nervous system.

Alan R. Gintzler, A. Lévy, S. Spector · Proceedings of the National Academy of Sciences · 1976 · 111 citations · Full text

Morphine-like Compound, Immunology, Pharmacotherapy +21

Chemical characterization and regulation of endogenous morphine and codeine in the rat.

Josef Donnerer, George J. Cardinale, J. A. Coffey et al. · Journal of Pharmacology and Experimental Therapeutics · 1987 · 107 citations

Synthesis of the skeleton of the morphine molecule by mammalian liver

Charles J. Weitz, Kym F. Faull, Avram Goldstein · Nature · 1987 · 105 citations

Medicinal Chemistry, Biochemistry, Natural Sciences +6

Morphine and codeine are endogenous components of human cerebrospinal fluid

George J. Cardinale, Josef Donnerer, A. Donald Finck et al. · Life Sciences · 1987 · 87 citations

Molecular Neuroscience, Neurophysiology, Neuroanatomy +15