tokens: Expression of luciferase in these cells was induced by phorbol myristate acetate plus a calcium ionophore .
folded_tokens: expression of luciferase in these cells was induced by phorbol myristate acetate plus a calcium ionophore .
labels: O O B-protein_molecule O O O O O O B-other_organic_compound I-other_organic_compound I-other_organic_compound O O B-atom O O