19. Which of the following description about cancer pain mechanism is wrong, ( if ABCD are all
right , choice E)?
(A) Ischemia is involved in cancer pain mechanism.
(B) Tumor-induced release of protons is one of the possible mechanisms of cancer pain.
(C) Nerve growth factors (NGF) is involved in some cancer pain mechanism.
(D) Cyclooxygenase (COX) is not involved in cancer pain mechanism.
(E) All the above descriptions are right.