BCG vaccine fine powder. Sometimes the powder is sealed with vacuum in a glass ampoule. Such a glass ampoule has to be opened slowly to prevent the airflow from blowing out the powder. Then the powder has to be diluted with saline water before injecting. The history of BCG is tied to that of smallpox. Jean Antoine Villemin first recognized bovine tuberculosis in 1854 and transmitted it, and Robert Koch first distinguished "Mycobacterium bovis" from "Mycobacterium tuberculosis". Following the success of vaccination in preventing smallpox, established during the 18th century, scientists thought to find a corollary in tuberculosis by drawing a parallel
Inoculation theory "legalization of marijuana, gun control legislation, legalization of gambling, and restriction of television violence" (Miller et al., 2013, p. 135). Phase 2 presented an inoculation message relative to each participant's measured attitudes from Phase 1. The participants were divided into two groups, including the inoculation group and the control group. The questionnaire the participants received also gauged both their perceived threat and affect toward the attack messages. In Phase 3, each group was also given an attack message using either high-controlling or low-controlling language, and again, to evaluate the levels of perceived threat and affect. The study concluded that support