in a fluorescence or confocal microscope. The location of fluorescence will vary according to the target molecule, external for membrane proteins, and internal for cytoplasmic proteins. In this way immunofluorescence is a powerful technique when combined with confocal microscopy for studying the location of proteins and dynamic processes (exocytosis, endocytosis, etc.). References External links Immunocytochemistry Staining Protocol Immunohistochemistry of Whole-Mount Mouse Embryos Histology Immunologic tests Protein methods Staining Laboratory techniques