These results were consistent with the initial analyses for Neu tumor cells that exhibited a secretory alveolar gene expression signature (Figure 1G), and also suggested these Neu tumors contained cells which corresponded to a spectrum of differentiation states within the secretory alveolar lineage (i.e. C7:LP-PI → C11 and C10: AvP → C9 and C8: AvD). Here, ERBB2 is linked to neoplasm.