the occurrence and frequency of enterochromaffin cells in the intestine of 14 separate species of birds , the quantitative variations in the several sections of the intestine and the quantitative changes in the embryonic and postembryonic development of anas platyhynchos have been investigated by the protargol-reaction of bodian and the fluorescence method of falck and hillarp .
C0014355
enterochromaffin cells
C0021853
intestine