Immunocytochemistry analysis of FXR in NIH3T3 cells. Samples were incubated with FXR polyclonal antibody (Product # PA1-16822) using a dilution of 2 µg/mL overnight at 4°C followed by anti-rabbit Dylight 488 (Green) at a dilution of 1:500. Cells were fixed for 10 minutes using 10% formalin and then permeabilized for 5 minutes using 1X PBS + 0.5% Triton-X100. Alpha tubulin (DM1A) was used as a co-stain at a 1:1,000 dilution and detected with an anti-mouse Dylight 550 (Red) at a 1:500 dilution. Nuclei were counterstained with DAPI (Blue). Cells were imaged using a 40X objective.