All of the following structures are composed of collagen except one. Which one is the exception?
A) Sulcular epithelium
B) Principal fibers
C) Gingival fibers
D) Cementum
E) Alveolar bone
A
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"Metastasis" occurs when malignant cells:
a. reproduce in the original location. b. die off. c. shed to other areas of the body. d. develop their own blood supply.
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Which of the following agents promotes the development of non-Hodgkin lymphoma through mucosa-associated lymphoid tissue (MALT) infiltration?
a. BCL-2 translocation b. Helicobacter pylori c. Epstein-Barr virus d. Ataxia telangiectasia
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