As shown inFig
As shown inFig. hs1.2 and hs4, although individually dispensable for CSR, are, together, sufficient to support CSR. Keywords:Antibodies, DNA Recombination, Gene Expression, Gene Regulation, Immunology, Lymphocyte, Transcription Enhancers, Class-switch Recombination, Immunoglobulin Genes, Transgenic Mice == Introduction == The immunoglobulin heavy and light chain (IgH and IgL) loci undergo multiple rounds of DNA recombination and somatic…