| Answer | Crossword Clue |
|---|---|
| bradykinins | BRADYKININ, a blood hormone causing dilation of blood vessels |
| bradykinin | a blood hormone causing dilation of blood vessels |
| histamin | histidine-derived amine compound that is released mainly by damaged mast cells in allergic reactions, causing dilation and permeability of blood vessels and lowering blood pressure |
| bradykinin | A compound released in the blood in some circumstances that causes contraction of smooth muscle and dilation of blood vessels. It is a peptide comprising nine amino-acid residues |
