. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "erbb4_human"^^ . "HER4"^^ . "ERBB4"^^ . "p180erbB4"^^ . "Proto-oncogene-like protein c-ErbB-4"^^ . "Tyrosine kinase-type cell surface receptor HER4"^^ . . . "Receptor tyrosine-protein kinase erbB-4"^^ .