What was the original source of taxane chemotherapy drugs, and why did that source change?
What will be an ideal response?
Answer: Paclitaxel was the first of the taxane chemotherapy drugs, which were so named because they were originally derived from the bark of the Pacific yew tree whose scientific name is Taxus brevifolia. This yew tree, which only grows in the Pacific Northwest, is small and grows slowly, and collection of the bark kills the tree. Now, the needles of European and Himalayan yews are used because they contain 10 times more paclitaxel and harvesting of the needles does not kill the trees.
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Which serological test is used to detect the presence of semen?
a. urease b. hemoglobin c. prostate specific antigen d. starch iodine
Which is NOT a characteristic of emphysema?
A. shortness of breath B. cardiac damage C. decreased lung elasticity D. excess bronchial mucus production
When the elbow is extended and the elbow flexors contract, which of the component forces acts in addition to the rotary component?
A. the dislocating component of muscle force B. the stabilizing component of muscle force C. both the stabilizing component of muscle force and the dislocating component of muscle force D. none of these answers is correct