. Endocrine glands
A. possess short ducts and secrete their products directly onto the skin surface.
B. lack ducts and secrete their products onto the skin surface.
C. possess ducts to secrete their products into the bloodstream or into interstitial fluid.
D. lack ducts and secrete their products into the bloodstream or into interstitial fluid.
E. secrete mucus directly into a body cavity.
D
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