Characterization of in vitro phenotypes of PDAC cell lines derived from KPC and 17KPC tumors. (A) Invasion activity in transwell assays, displayed as invasion index [(number of invading cells/number of migrating cells) × 100]. (B) Migration activity in transwell assays. (C) Proliferation rate. (D) Colony formation in a soft agar. (E) Cell survival in serum-replete medium. (F) Cell survival in serum-free medium. Cell line nomenclature is noted as cage#animal# (e.g. 9025#2 is the cell line derived from the primary tumor of mouse #2 from cage #9025). All error bars represent SD. p value: * < 0.05.