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.
Squalene is not itself an adjuvant, but it has been used in conjunction with surfactants in certain adjuvant formulations. An adjuvant using squalene is Novartis' proprietary MF59, which is added to influenza vaccines to help stimulate the human body's immune response through production of CD4 memory cells.