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Hussain, M.A., Aungst, B.J. Nasal Absorption of Leucine Enkephalin in Rats and the Effects of Aminopeptidase Inhibition, as Determined from the Percentage of the Dose Unabsorbed. Pharm Res 9, 1362–1364 (1992). https://doi.org/10.1023/A:1015882006897
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DOI: https://doi.org/10.1023/A:1015882006897