[ Admin note: To help in deciding whether this is of interest, the link starts with this paragraph -
What Goes Into a Vaccine?
Aside from antigens, ingredient components of a vaccine include adjuvants, added to enhance the immune system response; antibiotics, to prevent contamination during the manufacturing process; and preservatives and stabilizers.
These additional ingredients are often a source of concern for wary parents and patients. Below is a list of common ingredients in many vaccines, along with information on their purpose and safety. ]