Dopamine and Chromaffin Cells

Abstract

Abstract The dopamine content of tissues in ruminants (cow, sheep, goat) varies with the numbers of a special type of chromaffin cells and there is a close correlation between the distribution of dopamine and these cells within certain organs. Dopamine–but no other catechol amines or 5–hydroxytryptamine–occurs in concentrations sufficient to produce the observed chromaffin reaction. The findings support the view that dopamine is stored in the special chromaffin cells.