. "A heterodimeric complex between the tyrosine kinase receptor ERBB2 and a ligand-activated receptor ERBB3. ERBB2, which does not bind any known ligand, is activated through formation of a heterodimer with another ligand-activated ERBB family member such as ERBB3." . . . "EGFR:ERBB2 heterodimer" . "ERBB3:ERBB2 complex" . "NRG1/2:ERBB3:ERBB2" . . . .