title:Exogenous DNA uptake of boar spermatozoa by a magnetic nanoparticle vector system ' j: X$ z$ z9 }6 o; ehttp://www.ncbi.nlm.nih.gov/pubmed/19788517 8 ^- o1 j; l+ N+ B! T {$ Phttp://onlinelibrary.wiley.com/doi/10.1111/j.1439-0531.2009.01516.x/abstract