ESTIMATING SIZE OF OBJECTS AND MAKING A WET MOUNT Oscillatoria, 10X Oscillatoria, 20X Oscillatoria, 40X Nucleus A cyanobacterium; prokaryote; photosynthetic; contains chlorophyll and a blue pigment, phycocyanin; long unbranched filaments of cells; no flagella, but can move by means of a sliding motion. Wet Mount. Human cheek cell smear, stained with methylene blue. BACTERIA Cyanobacteria, Nostoc, 40X Cyanobacteria, Gloecapsa, 40X