title: Preface.
authors.affiliation: Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA. msn@mrc-lmb.cam.ac.uk
authors.forename: Patricia J
authors.initials: PJ
authors.lastname: Gearhart
authors.forename: Tomas
authors.initials: T
authors.lastname: Lindahl
authors.forename: Michael S
authors.initials: MS
authors.lastname: Neuberger
mesh_terms: D000906:Antibodies / Q000235:genetics; D003564:Cytidine Deaminase / Q000235:genetics / Q000276:immunology*; D003596:Cytosine / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D004260:DNA Repair; D003641:Deamination; D015321:Gene Rearrangement / Q000276:immunology*; D018398:Homeodomain Proteins / Q000235:genetics; D007110:Immunity, Active / Q000235:genetics*; D000098830:AICDA (Activation-Induced Cytidine Deaminase)
chemical_list: D000906:Antibodies; D018398:Homeodomain Proteins; C064658:RAG-1 protein; D003596:Cytosine; D004247:DNA; D000098830:AICDA (Activation-Induced Cytidine Deaminase); D003564:Cytidine Deaminase