Having large quantities of specific antibodies in the serum from repeated immunizations or infections.
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hy·per·im·mune .hī-pə-rim-'yün adj exhibiting an unusual degree of immunization <\hyperimmune swine>:
a) of a serum containing exceptional quantities of antibody
b) of an antibody having the characteristics of a blocking antibody
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hy·per·im·mune (hi″pər-ĭ-mūnґ) having large quantities of specific antibodies in the serum.Medical dictionary. 2011.