[Subcellular distribution of adenosine-, adenosine-5-monophosphate- and cytidine-5-monophosphate desaminase activity in the humna placenta and amnion tissue].

With the method of pH-Stat the adenosinedeaminase-, adenosine-5'-monophosphate deaminase-, cytidine-5'-monophosphate deaminase activities are determined in the nucleus-, mitochondrial-, microsomalfractions and in the cytoplasmatic fractions of the human termplacental and amniotic tissues. The desaminase activities were higher in the amniotic fractions. The possible importance of the adenosinedesaminase and adenosine-5'-monophosphate desaminase for the fetal-placental blood circulation is discussed.