Pre-exposure to UV irradiation increases the transfer frequency of the IncJ conjugative transposon-like elements R391, R392, R705, R706 R997 and pMERPH and is recA(+) dependent Breadcrumbs UL Home Research Publications Year of Publication 2005 Journal Fems Microbiology Letters DOI 10.1016/j.femsle.2005.01.013