Za0tsev, Sergei, Leonid A Sazanov, Aleksei Koshkin, Galina Sud’Ina, and Sergei Varfolomeev. “Respiratory Burst Inhibition in Human Neutrophils by Ultra-Low Doses of [D-Al] Methionine Enkephalinamide.”https://doi.org/10.1016/0014-5793(91)81109-L__FEBS Letters. Elsevier, 1991.https://doi.org/10.1016/0014-5793(91)81109-L .
LibreCat: https://research-explorer.ista.ac.at/record/1946
DOI: 10.1016/0014-5793(91)81109-L
PMID: 1936255 

Tsuchida, Kunihiro, Ryuichi Shigemoto, Yoshifumi Yokota, and Shigetada Nakanishi. “Tissue Distribution and Quantitation of the MRNAs for Three Rat Tachykinin Receptors.”https://doi.org/10.1111/j.1432-1033.1990.tb19396.x__European Journal of Biochemistry. Wiley-Blackwell, 1990.https://doi.org/10.1111/j.1432-1033.1990.tb19396.x .
LibreCat: https://research-explorer.ista.ac.at/record/2481
DOI: 10.1111/j.1432-1033.1990.tb19396.x
PMID: 1701145