Tumor-derived TGF-β1 reduces the number of DCs within TDLNs. A, Numbers of CD11c+ DCs in TDLNs and non-TDNLs from mice inoculated with TGF-β1-tranfected or mock-transfected tumor cells. B, TDLN/non-TDLN ratios for CD11c+ DCs in mice inoculated with TGF-β1-transfected or mock-transfected cells. C, To determine the maturation status of DCs within TDLNs, numbers of CD11c+ and CD86+ DCs were counted, after which the TDLN/non-TDLN ratio for CD11c+CD86+ DCs was calculated. * P < 0.05.