Immunocytochemistry of fixed and permeabilized human iPSCs plated on murine derived feeder cells using 5 µg/mL Mouse IgG2a K Isotype Control (Product # 14-4724-82) (left) or 5 µg/mL NLGN4X (Neuroligin-4) Monoclonal Antibody (right) followed by F(ab’)2-Goat anti-Mouse IgG Secondary Antibody eFluor® 660 (Product # 50-4010-82). Nuclei are stained with DAPI. An iPSC colony (positive staining) and mouse embryonic fibroblasts (negative staining) are in both fields of view.