Anyone can point me to a publication about the (random) error rate in PacBio sequencing machines and how it has decreased a bit over time?

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Katie A Burnette

You might want to contact a Pacbio company product representative. They don't necessary make the data publicly available, but I"m sure they would be happy to tell you about how awesome their machines are now compared to earlier models.

Soumitesh Chakravorty

This recent article might be of help

http://bmcgenomics.biomedcentral.com/articles/10.1186/1471-2164-14-670

Good luck