Pollen on one of the many yellow tubular flowers of a real camomile. Camomile flowers are used as an anti-inflammatory, antispasmodic, against flatulence and as a stomachic. For example in camomile tea.
The magnification: 600x when viewed on a 19 inch screen. The pollen itself has a diameter of 25-35 µm.
All exact sizes can be measured in strucTEM-Measure:
The image has been taken in a scanning electron microscope (SEM).
Note: The image was subsequently colorized, since original SEM images are only available in gray scales.