(D) Correlation graph of CSF1 expression in PANC-1 pLKOctrl or shCSF1 (#560-562) and how these various CM affect COL1A1 expression in PS-1 cells using qPCR, values were normalized for RPLPO expression. n=3 biological replicates for all individual experiments, error bars indicated SD. R2 and P-value were analyzed with linear regression. 