TGFB1 and neoplasm: In addition, TGFβ1 levels studied by ELISA in the blood samples longitudinally collected along the experiment strongly suggested the implication of TGFβ1 as a key target to restrain tumor growth in mouse skin, according to the significant drop in blood TGFβ1 levels resulting from the combined treatment of UV‐irradiated mice with NAC+PDT Figure S8B).