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50.0 MB (1.1 MB compressed)
5120 x 3413 pixels
43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)
SCIENCE PICTURE CO / SCIENCE PHOTO LIBRARY SCIENCE PICTURE CO / SCIENCE PHOTO LIBRARY
Caffeine molecular model next to a cup of coffee and coffee beans. Caffeine acts as a central nervous system stimulant.
Model release not required. Property release not required.