tokens: eTh2 cells are the major source of IL-4 , while gamma interferon is produced by eTh1 cells .
folded_tokens: eth2 cells are the major source of il-4 , while gamma interferon is produced by eth1 cells .
labels: B-cell_type I-cell_type O O O O O B-protein_molecule O O B-protein_molecule I-protein_molecule O O O B-cell_type I-cell_type O