Pathology Which of the following statements best characterizes natural killer cells? A They are a subset of T cells B They are involved in type III hypersensitivity reactions C They require prior sensitization in order to kill virally infected cells or tumor cells D They paicipate in antibody-dependent cellular cytotoxicity reactions 💡 Explanation Which of the following statements best characterizes natural killer cells? ✓ Correct Answer: D. They paicipate in antibody-dependent cellular cytotoxicity reactions