CALHM1 from Various Angles (IMAGE) Cold Spring Harbor Laboratory Caption Using cryo-electron microscopy, Furukawa's lab compiled a 3D image detailing the exact arrangement of the proteins that shape each CALHM pore. Pictured: CALHM1 as seen from the side, from the outside of the cell (extracellular), and from the inside of the cell (cytoplasm). Credit Furukawa lab/CSHL, 2020 Usage Restrictions Attribution needed 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.