We report a new 131I-labeling functional platform for targeted single-photon emission computed tomography (SPECT) imaging and radiotherapy of breast adenocarcinoma. In this study. polyethyleneimine (PEI) based nanogels (P. NH2 NGs) were prepared by water/oil polymerization. https://cosmeticssquadets.shop/product-category/blood-pressure-monitoring/