Fig. 4From: Unsymmetrical cyanine dye via in vivo hitchhiking endogenous albumin affords high-performance NIR-II/photoacoustic imaging and photothermal therapya The in vivo NIR-II images of the 4T1 tumor at different time points (1Â min-24Â h) after a tail vein injection of NIC-ER. b The in vivo PA images of the 4T1 tumor at different time points (pre-24Â h) after a tail vein injection of NIC-ER, the dashed ellipses indicate the tumorBack to article page