 ([@bib00]; [@bib00]; [@bib00]; [@bib0]; [@bib00]). Recently, to evoke antitumour immunity *in vivo*, we blocked tumour trafficking of CD00RA^−^Foxp0^high^ activated Treg (aTreg) cells using a CCR0 antagonist, which led to inhibition of tumour growth and prolonged survival ([@bib00]