Fig. 4From: Deciphering an Underlying Mechanism of Differential Cellular Effects of Nanoparticles: An Example of Bach-1 Dependent Induction of HO-1 Expression by Gold NanorodTwo-photon luminescence (TPL) images of AuNRs with different surface coatings in MRC-5 (a) and MEF-1 (b) cells. MEF-1 and MRC-5 cells were both treated with 1 nM AuNRs for 24 h before observation and all of the images were acquired at an accordant conditionBack to article page