Which of the Following Statements Does NOT Support the Concept

question 55

Multiple Choice

Which of the following statements does NOT support the concept of cancer stem cells?

• A)Drugs such as Gleevec that reduce tumor mass may not eliminate all cells in the tumor.
• B)Tumor cells are not homogeneous and can express different cell-surface markers.
• C)Treatment with drugs that stimulate stem cell differentiation improves the efficacy of small-molecule targeted therapies.
• D)A key feature of cancer is that cells of a primary tumor are capable of unlimited proliferation.
• E)Only some cells from a tumor are able to initiate the formation of a new tumor following injection into an immunodeficient mouse.

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Definitions:

Lumbar

Referring to the lower segment of the spine, comprising five vertebrae, key in supporting body weight and flexibility.

Brachial

Pertaining to the arm, specifically the area from the shoulder to the elbow.

Lumbosacral Plexus

A complex network of nerves located in the lower back, providing motor and sensory function to the pelvic area, buttocks, and legs.

Obturator

Pertains to covering or closing an orifice or a bodily passage, often referenced in anatomy with the obturator foramen or obturator nerve.