Developmental Increase in P2Y6R Abundance Enhances Angiotensin II-Induced Hypertrophic Response (IMAGE) National Institutes of Natural Sciences Caption P2Y6R abundance was developmentally increased in vascular smooth muscle cells. In neonatal cells, angiotensin II induced proliferation through AT1R monomer, whereas angiotensin II induced hypertrophy of adult vascular smooth muscle cells through AT1R-P2Y6R heterodimer. Credit NINS/NIPS Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.