Contents

09 July 2019
Vol 12, Issue 589

About The Cover

Cover image expansion

Online Cover This week features a Research Article that shows that amino acid–induced mTORC1 signaling maintains bone density by limiting the differentiation of osteoclasts in vivo. The image shows osteoclasts differentiated from mouse bone marrow macrophages lacking the amino acid transporter LAT1. [Image: Ozaki et al./Science Signaling]