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This fluorescence micrograph shows the vascular system of a developing chicken embryo, two days after fertilization. Injecting fluorescent dextran revealed the entire vasculature used by the embryo to feed itself from the rich yolk inside the egg. VINCENT PASQUEE, UNIVERSITY OF CAMBRIDGE
CAFFEINE CRYSTALS This false-coloured scanning electron micrograph shows caffeine crystals. Found in varying quantities in the seeds, leaves, and fruit of some plants, caffeine acts as a natural pesticide that paralyzes and kills certain insects feeding on the plant. The main crystals of caffeine were 400-500 microns long; however, this crystal group formed on the end of the larger crystal and measures around 40 microns in length.
6: Bacteria biofilm | 10 Of The Year's Most Amazing Science Photos | Co.Design: business + innovation + design
DIATOM FRUSTULE: This false-colored scanning electron micrograph shows a diatom frustule, a unicellular organism that is part of a major group of algae. Diatoms are one of the most common types of phytoplankton, and their communities are often used to measure environmental conditions such as water quality. This particular example is approximately 80 microns in diameter. ANNE WESTON, LONDON RESEARCH INSTITUTE, CANCER RESEARCH, UK
7: Desmid algae (Micrasterias denticulata) | 10 Of The Year's Most Amazing Science Photos | Co.Design: business + innovation + design