Biological process

Any process that activates or increases the frequency, rate or extent of differentiation of CD4-positive, CD25-positive, alpha-beta regulatory T cells as part of an immune response.

positive regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell development involved in immune response, positive regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation during immune response, positive regulation of CD4-positive, CD25-positive, alpha-beta regulatory T lymphocyte differentiation during immune response, positive regulation of CD4-positive, CD25-positive, alpha-beta regulatory T-cell differentiation during immune response, positive regulation of CD4-positive, CD25-positive, alpha-beta regulatory T-lymphocyte differentiation during immune response, up regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation during immune response, up-regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation during immune response, upregulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation during immune response

Note that immunologists typically use the word 'development' to refer to cells of B or T cell lineages undergoing the process that GO describes as 'cell differentiation'.