When the calcium ionophore was used in conjunction with TPA , a PKC activator , the Zp induction was synergistically enhanced .
when the calcium ionophore was used in conjunction with tpa , a pkc activator , the zp induction was synergistically enhanced .
O O B-atom O O O O O O B-other_organic_compound O O B-protein_molecule O O O B-DNA_domain_or_region O O O O O