MUC1 and infection: Further assessment of the specificity of retargeting of aMUC1-PCVV to MUC1 was then performed in which a blocked MUC1-aMUC1-PCVV was formed by incubating the MUC1 peptide (500 molar equivalents with respect to aMUC1) within the infection media at the time of addition of the virus to the cells (as opposed to during the formation of virus coating) (results are shown in Figure 6).