Despite increasing evidence that the outcome of many diseases is determined by the ratio of the two subsets of CD4 ( + ) T helper cells , Th1 and Th2 , the molecular basis for Th1- and Th2- specific gene expression remains to be elucidated .
despite increasing evidence that the outcome of many diseases is determined by the ratio of the two subsets of cd4 ( + ) t helper cells , th1 and th2 , the molecular basis for th1- and th2- specific gene expression remains to be elucidated .
O O O O O O O O O O O O O O O O O O O B-cell_type I-cell_type I-cell_type I-cell_type I-cell_type I-cell_type I-cell_type O B-cell_type O B-cell_type O O O O O O O O O O O O O O O O