… The results showed that the recovery of morphine by this technique was 86+… method increased
the detection limit by 40-fold. With this method the concentration of endogenous morphine …

… We demonstrated the presence of endogenous morphine and its metabolite M6G in the
pedal ganglia of the bivalve mollusk Modiolus deminissus by a new HPLC technique. The …

… It is now well accepted that endogenous morphine is present in animals, both in … This
article examines morphine as an endogenous signaling molecule, in terms of its role in …

… The rat chow did not contain morphine or codeine as measured … only cxtracted free
morphine and we found the levels of free morphine in tissues to be very low (Donnerer …

… Materials/Methods: The presence of endogenous morphine and … The release of endogenous
morphine from monkey brain … Endogenous morphine, and its direct precursor codeine, was …

… An extremely sensitive method for the detection of endogenous morphine in plasma (80 pg
ml … analogous in hair with 10% HCl for 1 h at 100 C gave a quantitative recovery of morphine. …

… was to develop a method for quantitation of R- and S-methadone, morphine, M6G, and … lysis,
and endogenous and exogenous bacteria cause putrefaction. Quantitative analysis of blood …

… range of quantitation was 1–1000 ng/mL for morphine, morphine-… This method was able
to separate structurally similar … of morphine and minimize interference from endogenous …

… the opiate alkaloids morphine and morphine 6 glucuronide as … This method found endogenous
morphine and morphine 6 … did not contain morphine as determined by these methods. …

… the sum of morphine, M3G, and M6G exceeds 1 μg/ml. Therefore, the quantitative method
must be … due to the absence of endogenous morphine isomers also excreted as glucuronides. …