Some proteins are less sensitive to translational inhibition by rapalogs than others, as indicated by a lack of hemoglobin synthesis inhibition.

“there's several different kinds of protein synthesis and some are more or less sensitive to inhibition by rapalog mitch weiss's very recent paper one of the interesting things i found in it was that there wasn't much of an inhibition of hemoglobin synthesis despite the fact that they were using fairly high exposures of a rapalog”