**3.2 Delivery of DNA vector into cultured somatic cells**

Following vector construction and preparation of the DNA construct for delivery into a somatic cell, it is important to identify an efficient method of DNA delivery into somatic cells as efficiency between delivery methods varies greatly. There are numerous methods to introduce an exogenous DNA construct into somatic cells, which can be categorized as liposome-mediated DNA transfer (Hyun et al., 2003a; Lee et al., 2005), electroporation (Dai et al., 2002; Ramsoondar et al., 2003; Watanabe et al., 2005) and viral-mediated delivery (Lai et al., 2002b; Rogers et al., 2008).
