Which substance prevents viral replication? A. Compliment B. Antibodies C. Histamine D. Interferon 15. Cancer cells and virus-infected body cells can be killed before activation of adaptive immunity by I A. B lymphocytes B. Tlymphocytes C. Antigen presenting cells D. Natural killer cells 16. The is/are known as the “boxers muscle” as it/they depress the scapula A. Serratus anterior B. trapezius C. B and C correct D. Rhomboids E, A and B correct