antianaphylaxis

noun
an·ti·an·a·phy·lax·is | \-ˌan-ə-fə-ˈlak-səs \
plural antianaphylaxes\-ˌsēz \

Medical Definition of antianaphylaxis 

1 : a condition in which an anaphylactic reaction is not obtained because of the presence of free antibodies in the blood

2 : the state of desensitization to an antigen

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