The masters think a slave who chooses to work during his time off doesn't deserve the time off, and a slave who doesn't work to save enough throughout the year to buy whiskey for the holidays is considered lazy.
An adjuvant is a substance added to some vaccines to enhance the immune response of vaccinated individuals. The aluminum salts in some U.S. licensed vaccines are aluminum hydroxide, aluminum phosphate, alum (potassium aluminum sulfate), or mixed aluminum salts.
Vaccination involves putting a small amount of an inactive form of a pathogen into the body. 1  Vaccines can contain: 2  live pathogens treated to make them harmless. 3  harmless fragments of the pathogen. 4  toxins produced by pathogens. 5  dead pathogens.