Mitochondrial cross-sections appear as oval structures. The inset shows a magnification of a mitochondrium, in which cristae appear as membrane invaginations. Crista junctions are marked by an ...
Transmission electron micrograph of one of the smallest known eukaryotic algae, Micromonas. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!