Fig. 2

Outcomes of the optical image processing of GO–HP samples of two representative healthy a and unhealthy b subjects. Corresponding overlapped one-dimensional intensity profiles from non-oncological (NOP) (blue curve) and PDAC (red curve) samples c. Box plot of the starting positions of 22 NOP and 24 PDAC patients d. Asterisks correspond to Student’s t test p values: *p < 0.05; **p < 0.001