Immunocytochemistry of fixed and permeabilized HepG2 cells using 10 µg/mL of Mouse IgG1 K Isotype Control Alexa Fluor® 488 (green, left) or 10 µg/mL of Anti-Human/Mouse Sox9 Alexa Fluor® 488 (green, right). Nuclei are stained with DAPI (blue), colocalization of signal appears aqua.