Source: https://www.researchgate.net/profile/Lionel-Larue/publication/228439303_Recombinaison_homologue_et_ciblage_de_gene_Homologous_recombination_and_gene_targeting/links/09e415060728dda15b000000/Recombinaison-homologue-et-ciblage-de-gene-Homologous-recombination-and-gene-targeting.pdf