Which does NOT apply to hormones?
A. They are secreted into the blood by ductless glands.
B. All hormones are derived from cholesterol.
C. They are sometimes secreted by neural tissue.
D. In some cases, the same chemical substances can also function as local regulators and/or neurotransmitters.
E. They are chemical regulators that are conveyed from one organ to another via the bloodstream.
Answer: B
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