Morphological analysis of the constructed CaCDC4 repressible strains. Cells of strains JSCA0021 and JSCA0022 were grown on SD medium or plates with (+) or without (-) Met/Cys. Colonies were photographed with MEIJI stereoscopic microscope EMZ5 at 40× magnification (top panel). Cells in liquid culture were visualized and recorded with a Nikon 50i microscope at 400× magnification (bottom panel). Bars represent 10 μm.