Recent progress in the field of gastrointestinal peptide hormones.

This is a critical survey of the results of recent investigations on gastrointestinal peptide hormones. The following subjects are dealt with: molecular homology and heterogeneity; mechanism of action of gastrointestinal peptide hormones; hormone-receptor binding; trophic effect; metabolism of gastrointestinal peptide hormones; relationship between humoral and neural regulation in the nervous system.