To further explore the ramifications of CD19 signaling , the current study examined whether phosphorylation of Elk-1 , activation of activator protein-1 ( AP-1 ) , or activation of nuclear factor-kappaB ( NF-kappaB ) transcription factors occurred following CD19 cross-linking .
to further explore the ramifications of cd19 signaling , the current study examined whether phosphorylation of elk-1 , activation of activator protein-1 ( ap-1 ) , or activation of nuclear factor-kappab ( nf-kappab ) transcription factors occurred following cd19 cross-linking .
O O O O O O B-protein_molecule O O O O O O O O O B-protein_molecule O O O B-protein_molecule I-protein_molecule O B-protein_molecule O O O O O O O O B-protein_complex O B-protein_family_or_group I-protein_family_or_group O O B-protein_molecule O O