Platelet mechanosensing of substrate stiffness during clot formation mediates adhesion, spreading, and activation Yongzhi Qiu Ashley C. Brown David R. Myers Yumiko Sakurai Robert Mannino Reginald Tran Byungwook Ahn Elaissa Hardy Matthew F. Kee Sanjay Kumar ... Published in Proceedings of the National Academy of Sciences India Section A Physical Sciences