chapter 1 The regulatory and science-based safety evaluation of genetically modi?ed food crops -- A USA perspective / chapter 2 The regulatory requirements for novel foods -- A European perspective / chapter 3 The concept of substantial equivalence: an overview -- An overview Historical background / chapter 4 Strategies for analysing unintended effects in transgenic food crops / chapter 5 Allergenicity of foods produced by genetic modification / chapter 6 Biosafety of marker genes the possibility of DNA transfer from genetically modi?ed organisms to the human gut micro?ora -- The possibility of DNA transfer from genetically modified organisms to the human gut microflora / chapter 7 Case study: canola tolerant to Roundup herbicide: an assessment of its substantial equivalence compared to non-modi?ed canola -- An assessment of its substantial equivalence compared to non-modified canola / chapter 8 Case study: Bt crops -- A novel mode of insect control / chapter 9 Case study: recombinant baculoviruses as microbial pesticidal agents / chapter 10 Case study: virus-resistant crops -- Squash and virus disease