This micrograph is the maximum projection of a z-stack obtain using a confocal laser scanning microscope of Arabidopsis cotyledon epidermal cells. The paired guard cells for the stomatal pore which control plant ‘breathing’. Bundles of cellulose microfibrils are visualized using Calcofluor White staining. This was a part of a project on cellulose distribution patterns in plant cells with complex cell shapes. [Image by: Amir J Bidhendi - Geitmann Lab]