The incorrect measuring unit was given in Chapter 5 page 58, of the print and online versions of this title. The correction is listed below.

Assemble the polyadenylation reaction on ice. Mix 0.01 pmol of the substrate RNA (see Note 5) in a final volume of 12.5 µL containing 16.8 mM creatine phosphate, 80 ng/µL creatine kinase, 60 µM amino acids, 24 mM HEPES pH 7.4, 0.4 mM Mg(OAc)2, 48 mM KOAc, and 40 % embryo extract.