It is , however , still unclear whether LTB4 acts in this regard directly or indirectly by stimulating the release of chemotactic and inflammatory cytokines .
it is , however , still unclear whether ltb4 acts in this regard directly or indirectly by stimulating the release of chemotactic and inflammatory cytokines .
O O O O O O O O B-other_organic_compound O O O O O O O O O O O O B-other_name I-other_name B-protein_family_or_group I-protein_family_or_group O