Antibody class switch recombination (CSR) in B lymphocytes joins two DNA double-strand breaks (DSBs) lying 100 to 200 kilobases (kb) apart within switch (S) regions in the immunoglobulin heavy chain locus (IgH). CSR-activated B lymphocytes generate multiple S-region DSBs in the donor Sm and in a do...
ORGANISM(S): Mus musculus