[{"Bold_text": "noun", "List Items": ["any preventive preparation used to stimulate the body’s immune response against a specific disease, using either messenger RNA or killed or weakened bacteria or viruses to prepare the body to recognize a disease and produce antibodies.", "(no longer in technical use) the virus of cowpox, used in vaccination ,obtained from pox vesicles of a cow or person.", "a software program that helps to protect against computer viruses, as by detecting them and warning the user."]}, {"Bold_text": "adjective", "List Items": ["of or relating to vaccination .", "of or relating to vaccinia .", "of, relating to, or derived from cows."]}]