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Pediatric Immunology Glossary

100 terms total — 24 showing — Last updated 15 Sep 2026

opsonization

Intermediate Technical IVT

The process of coating pathogens with antibodies or complement proteins to enhance phagocytosis by immune cells.

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graft-versus-host disease

Advanced Technical IVT

A complication of bone marrow transplantation where donor immune cells attack recipient tissues.

Technical Term Full entry →

hapten

Advanced Technical IVT

A small molecule that becomes immunogenic only when bound to a larger carrier protein, relevant in pediatric drug allerg...

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HSCT

Advanced Technical IVT

Hematopoietic stem cell transplantation, a curative treatment for severe primary immunodeficiency disorders.

Technical Term Full entry →

hyper-IgE syndrome

Professional Technical IVT

Primary immunodeficiency characterized by extremely elevated IgE levels, recurrent skin and lung infections, and distinc...

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hypogammaglobulinemia

Advanced Technical IVT

Abnormally low levels of gamma globulins (antibodies) in the blood, leading to increased susceptibility to infections.

Technical Term Full entry →

hypogammaglobulinemia of infancy

Advanced Technical IVT

A temporary condition of low immunoglobulin levels in infants, typically resolving as the child's immune system matures.

Technical Term Full entry →

hypomorphic mutation

Professional Technical IVT

A genetic mutation that reduces but does not eliminate protein function, often causing milder immunodeficiency phenotype...

Technical Term Full entry →

IL-2 receptor deficiency

Professional Technical IVT

A primary immunodeficiency caused by mutations affecting interleukin-2 receptor components, impairing T-cell activation.

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immune complex

Intermediate Technical IVT

Molecular complexes formed by antibodies bound to antigens that can deposit in tissues and cause inflammatory damage in...

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immune dysregulation

Advanced Technical IVT

Abnormal immune system control leading to inappropriate responses such as autoimmunity or excessive inflammation in pedi...

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A rare X-linked primary immunodeficiency caused by FOXP3 mutations, characterised by severe early-onset autoimmunity inc...

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immune dysregulation syndrome

Professional Technical IVT

Group of primary immunodeficiencies characterized by autoimmunity, autoinflammation, and atopy due to defective immune r...

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immune reconstitution

Advanced Technical IVT

The recovery of immune function following treatment, particularly after bone marrow transplantation or gene therapy in i...

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A paradoxical inflammatory response that occurs following immune system recovery in immunocompromised patients.

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A condition characterised by deficient serum levels of one or more of the four IgG subclasses (IgG1–IgG4) despite normal...

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immunoglobulin replacement therapy

Intermediate Technical IVT

Treatment involving administration of pooled human immunoglobulins to patients with antibody deficiencies.

Technical Term Full entry →

immunoglobulin subclass deficiency

Intermediate Technical IVT

Selective reduction in specific IgG subclasses while total IgG levels remain normal, causing recurrent infections in chi...

Technical Term Full entry →

immunologic reconstitution

Advanced Technical IVT

The process of restoring normal immune system function following treatment for primary immunodeficiency disorders.

Technical Term Full entry →

immunological memory

Intermediate Technical IVT

The immune system's ability to rapidly recognize and respond to previously encountered antigens, fundamental to pediatri...

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immunophenotyping

Intermediate Technical IVT

Flow cytometric analysis of immune cell surface markers to characterize and quantify lymphocyte populations.

Technical Term Full entry →

immunosenescence

Advanced Technical IVT

Age-related decline in immune system function affecting both innate and adaptive immunity in pediatric patients with chr...

Technical Term Full entry →

inborn error of immunity

Professional Formal IVT

The current preferred term for primary immunodeficiencies, emphasizing their genetic basis and diverse manifestations.

Technical Term Full entry →

IPEX syndrome

Professional Technical IVT

A rare X-linked immunodeficiency characterized by immune dysregulation, polyendocrinopathy, enteropathy, and X-linked in...

Technical Term Full entry →

IVIG

Intermediate Technical IVT

Intravenous immunoglobulin therapy used to replace antibodies in patients with immunodeficiency disorders.

Technical Term Full entry →
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