Immunofluorescent staining of IB4, CGRP and TRPV1 in isolated DRG neurons. (A1) - (A3): IB4-FITC staining to living cells. (B1) - (C3): immunofluorescent staining of TRPV1 (B1 - B3) and CGRP (C1 - C3) in isolated DRG neurons. (A1) - (C1): viewed under bright field microscope. (A2) - (C2): viewed under fluorescence microscope. (A3) - (C3): merged. Scale bar: 100 μm.