The primary immune response A. Occurs more rapidly and is stronger than the secondary response B. Has a longer lag period C. Occurs when memory cells are stimulated D. Is another name for immunological memory 10. B lymphocytes develop immunocompetence in the 1 A. Spleen B. Lymph nodes C. Bone marrow D. Thymus 11. A nursing infant develops a powerful sucking muscle that adults also use for whistling. What muscle is this called A. zygomaticus B. Masseter C. Platysma D. Buccinator

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