Confocal micrograph of a green alga, Penium margaritaceum. The cell wall is shown in green and the chloroplast is represented by autofluorescence. Honorable Mention, 2011 Olympus BioScapes Digital Ima...

Unicellular alga Penium, treated with the microtubule poison oryzalin. Fifth Prize, 2009 Olympus BioScapes Digital Imaging Competition®.

Scanning electron micrograph of a diatom frustule. The frustule is the hard and porous cell wall or external layer of diatoms.

Arabidopsis thaliana (thale cress) embryos imaged with confocal microscopy. Honorable Mention, 2009 Olympus BioScapes Digital Imaging Competition®.

Confocal micrograph of an Arabidopsis thaliana (thale cress) seedling. Honorable Mention, 2010 Olympus BioScapes Digital Imaging Competition®.

An electron micrograph of a thin section of a hypha of the fungal ascomycete Neurospora crassa. The cell wall, mitochondria and cytoplasmic ribosomes are prominent. Image made available by James D. Ja...

Differential interference contrast image of Closterium costatum, a unicellar desmid. Every binary fission creates a cross line on the cell wall. The single cross line seen here indicates that this cel...

3D stereoscopic projection of a z-stack of confocal images of an Arabidopsis thaliana plant embryo that was fixed, cleared and stained. Red/Green 3D lenses required for stereoscopic view. Honorable Me...

An electron micrograph of the unicellular flagellate protists Euglena. The image shows a grazing section of a cell illustrating the spiral ridged pellicle. Micrograph made available by James D. Jamie...

Colorized scanning electron micrograph of a diatom frustule. Diatoms are unicellular organisms and a major group of algae. Diatoms are encased within a hard cell wall made from silica (glass) known as...