Figure 1.

Protein immunoblot comparing Msp2 expression at 17 vs. 23 in vitro passages. Note the appearance of a dominant 48 kDa band in both lanes, the presence of a 30 kDa band after 17 passages that is very weakly detected at 23 passages, and the appearance of new bands at 37.5, 40, 43, and 46 kDa