Interleukin-4 ( IL-4 ) plays a major role in this process by promoting the differentiation of IL-4 -secreting Th2 cells .
interleukin-4 ( il-4 ) plays a major role in this process by promoting the differentiation of il-4 -secreting th2 cells .
B-protein_molecule O B-protein_molecule O O O O O O O O O O O O O B-protein_molecule O O O O