a bodily defense reaction that recognizes an invading substance (an antigen: such as a virus or fungus or bacteria or transplanted organ) and produces antibodies specific against that antigen
(chemistry) a process in which one or more substances are changed into others
a bodily process occurring due to the effect of some antecedent stimulus or agent
doing something in opposition to another way of doing it that you don't like
extreme conservatism in political or social matters
a person who is immune to a particular infection
(usually followed by `to') not affected by a given influence
relating to or conferring immunity (to disease or infection)
