LGALS7B and papilloma: DMBA/TPA-treated Lgals7−/− animals adoptively transferred with M-MDSC-Gal-7 developed a considerably higher number of papillomas compared with Lgals7−/− mice receiving M-MDSC-C (Fig. 7A) and displayed a similar phenotype to that observed in DMBA/TPA-treated WT mice (Supplementary Fig. S3B).