Overcome interference and recover ssDNA from phagemid vectors with helper phages R408 model Stable and easy to grow helper phages provided in a single-strand size of ~4 KB.;R408 helper phages eliminate the possibility of co-infection from the helper phage and enable the mass excision of…

ExAssist helper phage with XOLR allows mass excision of libraries in Lambda vector systems. ExAssist contains an amber mutation that prevents replication of the phage genome in a nonsuppressing E. coli strain (e.g., XLOLR cells);XLOLR cells are resistant to Lambda infection prevent lambda DNA…