Yu, Q.; Roberts, M. G.; Houdaihed, L.; Liu, Y.; Ho, K.; Walker, G.; Allen, C. A.; Manners, I.; Reilly, R. M.; Winnik, M. A. Investigating The Influence Of Block Copolymer Length On Cellular Uptake And Penetration Into A Multicellular Tumor Spheroid Model. Nanoscale 2020, 13, 280?291.