Figure 3. PTPρ mediates homophilic cell-cell aggregation.
(A) Sf9 cells were infected with GFP while another flask of Sf9 cells was co-infected with PTPρ and RFP viruses. Sf9 cells from the two flasks were mixed at a 1:1 ratio and a cell aggregation assay was performed. (B) One flask of Sf9 cells was co-infected with PTPμ and GFP viruses, while another flask of Sf9 cells was co-infected with PTPρ and RFP viruses. Sf9 cells from the two flasks were mixed at 1:1 ratio and cell aggregation assay was performed. Images of cell aggregates were captured under phase, GFP and RFP fluorescent filters respectively.