Imaging of the GI tract by QDs loaded heparin-deoxycholic acid (DOCA) nanoparticles

► It is the first ever formulation for oral delivery of quantum dots. ► The Q-LHD nanoparticles absorbed in ileum of small intestine which has been observed by imaging technique. ► Absorption, biodistribution, metabolism and elimination of Q-LHD nanoparticles observed by imaging process. ► QDs loaded LHD nanoparticles absorbed through interaction between DOCA and bile acid receptors of small intestine.