local microscopy. Cell Tissue Res 275:1139-123. 23. Lundberg.). M., A. Dahlstrom, A. Bylock, H. Ahlman, G. Pence's's, 1. Janson. H. A. Hansson. and J. Kewanee. 1978. 1.11trastiuctural evidence for an innervation of epithelial emerochromathne cells in the guinea pig duo- denum. Ada Physiol. Seand. 24. hlo