[55, 94] Other studies have also shown that Au25(SG)18 clusters can be exploited as an efficient fluorophore for bone imaging.[95] In 2021, the CD‐Au NC labeled with anti‐CD326 antibody (Ab@Au NCs) could be efficiently tracked in vivo during blood circulation without interfering with biodistribution and tumor‐targeting capabilities, enabling sensitive tumor‐targeted imaging.[96] A great nanocluster with a QY (∼8%) based on a rod‐shaped bi‐icosahedral [Au25 (PPh3)10(SC2H4Ph)5Cl2]2+ has also been developed, which has a peak emission wavelength of 1520 nm at the NIR‐II window.[97]. Here, EPCAM is linked to neoplasm.