Abstract
AbstractMAR was developed to increase the resolution of the image for the sliced plant sample. This revised MAR method showed the detailed distribution of 137Cs accumulation in embryos, which indicated that the plumule and radicle, which grow as a meristem of a root or shoot, were protected from the accumulation of heavy elements. Because of daguerreotype imaging, MAR is now hardly used, and the film emulsion is not available. Here, this method was essentially recreated with a revised processing method for both sample preparation and imaging process.