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Leiden leaf c.s. under microscope
American colony, New Sweden.
Is igneous rock formed by slow cooling from vulcanic magma of basaltic composition
plant Flower bud of Lilium brownii var.viridulum T.S.\nunder light mircoscope with white background
Petrified wood, 20 million years old wood. Wood turned into stone
Epidermis. Electron microscope micrograph showing a keratinocyte of spinous layer. The epithelial cell has a polygonal shape, central nucleus with nucleolus, cytoplasm full of keratin filament bundles, and numerous dark desmosomes crossing the intercellular spaces.
Blastomycosis is a fungal infection caused by inhaling Blastomyces dermatitidis spores. If it involves only the lungs, it is called pulmonary blastomycosis. Only about half of people with the disease have symptoms, which can include fever, cough, night sweats, muscle pains, weight loss, chest pain, and feeling tired.
boulder opal from Queensland, Australia isolated on white background
Fossilised Fish
Big natural stone green amber on white background
Tiger’s eye mineral stone sample macro photography
Cross section leaf of plant under the light microscope view for botany education.
Mineral, pink Charoit
Transmission electron microscope (TEM) micrograph showing dark melanin granules in a melanocyte (top center) and in several keratinocytes, which, unlike melanocytes, have bundles of keratin filaments
High-grade serous ovarian carcinoma with SET features
a sample of minerals from nature
nephrite mineral stone
A chert conglomerate from the Fig Tree Formation of the Barberton greenstone belt
Piece of natural mineral gemstones in gift store
Details of a fragment of a quartz crystal geode
A 1998 Austria postage stamp with an illustration of a landscape scene within Kalkalpen National Park in Upper Austria; postmarked in Vienna (Wien).
Tasty nori seaweed as a background. Top view.
Invasive urothelial carcinoma nephroureterectomy in the kidney with vascular invasion
Isolated sample of a Quartzite rock on texture background. Quartzite Metamorphic Rock sample. Quartzite stone isolated.
Mikroklin Amazonit Kristall peak Teller County, Colorado
This is a agate is a semi-precious stone photographed in the studio with a flash
Magnified close up of an igneous rock with metallic minerals in the cracks.
Picture of Serpentine stone isolated on a background.
Free Images: "bestof:Fig2-Lyell.jpg Figure 2 Figures from the book Student's Elements of Geology 1870 Charles Lyell Free for all use PD-old Figures from Student's Elements of"
Female student with open tree identification book looking at tree leaves to identify species.jpg
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Stanisław Samostrzelnik, Św Stanisław.jpg
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Black metal figures.jpg
Three figures.jpg
Palaistra_scene_Louvre_G457.jpg
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An event leader helps an archery student practice her skills.jpg
Student being shown by teacher how to correctly hold bird being prepared for banding.jpg
Student carefully marks an turtle egg which notes its orientation in the nest.jpg
Teacher handing student wetland plants to put in newly established pond.jpg
A young student pretends to extinguish the flames of a pretend fire.jpg
Student pouring river water into beaker held by teacher and service employee overseeing in background.jpg
An environmental education student gets to feel the back of a young alligator on the refuge.jpg
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Arab Horse Soldiers - Spahis.jpg
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Classical landscape with small waterfall and village.jpg
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