...available at Addgene. Gamma-Retrovirus Versus Lentivirus Lentiviruses and gamma-retroviruses fall under the Retroviridae...main difference between lentiviruses and gamma-retroviruses is that lentiviruses are capable of infecting...that lentiviruses can infect a greater variety of cell types than retroviruses. Both lentiviruses and ...containing only the necessary packaging genes, while lentiviruses also contain accessory genes specific to each...plasmids, as lentiviral vectors do. For more about lentiviruses, see Addgene's lentiviral vector guide . Gamma-Retroviral...