Histone mRNA Three-Prime (3') End-Processing Machine (IMAGE) University of North Carolina Health Care Caption This is an illustration of the histone mRNA three-prime (3') end-processing machine. Credit Liang Tong Lab, Columbia University Usage Restrictions credit properly 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.