TGFB1 and breast cancer: In the in vitro experiments of Tan et al. [20], which assessed the efficacy of the murine anti-TGFβ monoclonal antibody 1D11, the experimental metastasis models were used: bone-tropic and lung-tropic MDA-MB-231 human breast cancer cells sublines (preferentially metastasize to lungs: MDA-231-4175TR or bones: MDA-231-SCP2TR and 2860TR).