Fig. 1. Total, mucosal and serosal wet mass of the stomach and small intestine, and pancreas wet mass of Python molurus as a function of days postfeeding. Note the postprandial increase in the mass of the pancreas and small intestine, and the lack of change in stomach and intestinal serosal mass. In this and similar figures, error bars indicate ± 1 s.e.m. and are omitted if the s.e.m. is smaller than the width of the symbol used for the mean value.