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B cell repertoire diversity in athymic mice
The Journal of Experimental Medicine
|March 1, 1980
Summary
Athymic mice have a B cell repertoire diversity equivalent to normal mice. This suggests diverse B cell responses can occur without T cell help, even across different immunoglobulin allotypes.
Area of Science:
- Immunology
- Immunogenetics
Background:
- The B cell repertoire's diversity is crucial for adaptive immunity.
- Athymic (nu/nu) mice lack T cells, making them a model to study T cell-independent B cell responses.
Purpose of the Study:
- To compare the B cell repertoire diversity between athymic (nu/nu) BALB/c mice and normal BALB/c mice.
- To investigate if diverse B cell clonotypes can be stimulated in the absence of T cells and distinct immunoglobulin allotypes.
Main Methods:
- Characterization of monoclonal antibodies specific to influenza hemagglutinin.
- Analysis of antibody reactivity patterns to assess B cell repertoire diversity.
Main Results:
- The B cell repertoire diversity in athymic BALB/c mice was found to be equivalent to that of normal BALB/c mice.
- Diverse B cell responses were observed in histocompatible recipients with different immunoglobulin allotypes, indicating T cell-independent stimulation.
Conclusions:
- The absence of T cells does not limit the diversity of the B cell repertoire.
- A wide array of B cell clonotypes can be stimulated independently of T cells and allotype matching.