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Science 22 October 1965:
Vol. 150. no. 3695, pp. 503 - 504
DOI: 10.1126/science.150.3695.503
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Articles

Nucleoside Phosphatases of Fetal and Maternal Blood Cells: Electron Microscope Study

Reid S. Connell 1 and Robert L. Bacon 1

1 Department of Anatomy, University of Oregon Medical School, Portland

Surface membranes of the blood cells located within the maternal blood sinuses of the rat placenta contain reaction products of nucleoside phosphatases. Fetal blood cells separated from maternal blood by the placental labyrinth show no activity during normal or prolonged gestation. Neonatal blood cells examined 34 hours after parturition show these enzyme activities.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)