50.0 MB (2.5 MB compressed)
5006 x 3491 pixels
42.4 x 29.5 cm ⏐ 16.7 x 11.6 in (300dpi)
CLAUDIA STOCKER / SCIENCE PHOTO LIBRARY CLAUDIA STOCKER / SCIENCE PHOTO LIBRARY
Lung tissue, illustration. Seen here are a number of alveoli (air sacs) the site of gaseous exchange in the lungs. They are surrounded by capillaries containing red blood cells (white). Bronchioles, the smallest airways are lined with cilia (black), hair-like structures that beat to remove particles and other debris from the lungs.
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