0e0d404b590149e31a1e19cbcaa1254d

Oscillatoria (oss-sill-at-oar-ee-a) (tentative identification) upper filament with gas vacuoles - protein inclusions which are not easily distinguished from membrane bound compartments which distinguish eukaryotes. To get to a correct identification. care needs to be taken to check if ALL cells have the inclusions. Gas vesicles tend not to be present in all cells. Differential interference contrast.