Fall in blood pressure caused by larger doses of
histamine is blocked by:
A. H1 antihistaminics alone
B. H2 antagonists alone
C. Combination of H1 and H2 antagonists
D. None of the above
histamine is blocked by:
A. H1 antihistaminics alone
B. H2 antagonists alone
C. Combination of H1 and H2 antagonists
D. None of the above