Fig. 13From: CD117+CD44+ Stem T Cells Develop in the Thymus and Potently Suppress T-cell Proliferation by Modulating the CTLA-4 PathwayStem T-cell development in the thymus and spleen. a Methods of stem T-cell development. b Important question of whether there is a contradictory problem with traditional DN T-cell development theory. DN double-negative, SP single-positiveBack to article page