Final answer:
Immunoglobulin therapy uses antibody mixtures to treat immunodeficiencies and autoimmune diseases through passive artificially acquired immunity.
Explanation:
Immunoglobulin therapy is the treatment that uses antibody mixtures administered via intravenous, subcutaneous, or intramuscular routes to treat immunodeficiencies and autoimmune diseases. These mixtures, such as IVIG, provide passive artificially acquired immunity by injecting immune globulin from another source, offering short-term protection against diseases.
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