CD24 and infection: Quite significantly, the virus conjugated with the SSEA4 and CD24 antibodies discriminated hES H9 and iPS cells from the differentiated HFF, with an average of 78% and 70% of the hES H9 and iPS cells, respectively, eGFP+ after infection in the presence of the CD24 antibody, compared with 1.2% of the cells eGFP+ on the HFF (Table 1).