“…In addition, we have previously reported that ErbB2 is over-expressed in human lung cancers [11], that this over-expression is associated with poor prognosis [12,15], and that targeting this receptor may have therapeutic potential [14,17]. Immunohistochemical analyses of fetal lung tissue localized ErbB2 expression and its associated receptor ErbB3 to the pulmonary epithelium [16].…”