187.21.138.9
Created page with "== Target Article == Methionine enkephalin and morphine alter monoamine and cyclic nucleotide levels in the cerebral ganglia of the freshwater bivalve Anodonta cygnea; GB Stefano, L Hiripi; 1979; doi_citing_unknown == Retraction == Morphine Elevates Levels of Cyclic GMP in a Neuroblastoma X Glioma Hybrid Cell Line ; Robert J Gullis Jorg Traber Bernd Hamprecht; 05/20/1975 ; https://doi.org/10.1038/256057a0 == Citation piece == Note: Open to append information."