Max Plank Institute for Infection Biology 1 article published in JoVE Biology Clock Scan Protocol for Image Analysis: ImageJ Plugins Maxim Dobretsov1, Georg Petkau2, Abdallah Hayar3, Eugen Petkau1 1Department of Anesthesiology, University of Arkansas for Medical Sciences, 2Department of Lymphocyte Development, Max Plank Institute for Infection Biology, 3Department of Neurobiology & Developmental Sciences, University of Arkansas for Medical Sciences This paper describes two novel ImageJ plugins for 'Clock Scan' image analysis. These plugins expand the functionality of the original visual basic 6 program and, most importantly, make the program available to a large research community by bundling it with the ImageJ free image analysis software package.