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Fern

medical illustration of Medicine: Lung: Bronchial cells
A fracture through the tissue of the ciliated cells of the human lung is shown (Tunica mucosa). These ciliated epithelia line the whole bronchi of the lung. In rhythmic motion the ciliaea of these cells transport inhaled dirt particles, together with separated mucus, from the lung in the direction of the trachea.
Scanning electron microscope, magnification 20 000:1
Next medical illustration of Wood fern (Dryopteris flix-mas) is a common fern of the temperate Northern Hemisphere. Spore capsules (Sporangia) are growing on the lower side of its leaves. Lots of these sporangia are seen here. When drying off the capsules break open and fling out most of the spores, others will be blown out by the wind. 
Scanning electron microscope, magnification 440:1

Spore capsule of Wood Fern

Medicine: Lung: Bronchial cells A fracture through the tissue of the ciliated cells of the human lung is shown (Tunica mucosa). These ciliated epithelia line the whole bronchi of the lung. In rhythmic motion the ciliaea of these cells transport inhaled dirt particles, together with separated mucus, from the lung in the direction of the trachea. Scanning electron microscope, magnification 20 000:1

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© Oliver Meckes