[appleflaxen]

No. The xerox machine had a digital analysis phase with a feedback loop between the image being recorded and the output being printed.

A western blot is a direct measurement.

It's like asking whether the xerox example might explain why the splatter pattern is identical in sections of two putatively different Jackson Pollock paintings.

[icermann]

Maybe I didn't make myself clear, but the image in the article looks like it could have made both one and two passes through a Xerox machine before it ended up in the paper.