Cluster-Chip Micropost Rows (IMAGE) Massachusetts General Hospital Caption On the Cluster-Chip, multiple roles of triangular microposts can capture circulating tumor cell clusters in a blood sample. Credit BioMEMS Resource Center, Massachusetts General Hospital Usage Restrictions Non-commercial use only 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.