SAT Subject Biology Practice Question 194: Answer and Explanation

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Question: 194

4. Which of the following plays an important role in the human immune system

A. Femur
B. Metatarsals
C. Patella
D. Scapula
E. Vertebra

Correct Answer: A

Explanation:

B cells and immature T cells are produced in the marrow of the long bones, such as the femur or thigh bone.

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