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Cellules végétales d'Allium cepa

A microscopic view of Allium cepa plant cells, stained with iodine to reveal their rigid cell walls and prominent nuclei.

Allium cepa plant cells showing rigid cell walls and visible nuclei, stained with iodine for golden-brown contrast, bright field microscopy, thin section slice. Voir plus

#Under the microscope

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A microscopic view of Elodea leaf cells showing rectangular cell walls and numerous green chloroplasts under brightfield illumination.
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A microscopic view of various diatoms, including circular centric frustules and elongated needle-like shapes, glowing in white and pale blue against a solid black background.
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A close-up view of honeycomb weathering in sandstone rock, illuminated by golden sunset light that casts deep shadows into the hollows.
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A circular spherulite of vitamin C crystals, featuring radiating needles in vibrant shades of blue, gold, and magenta, is bisected by a dark cross against a black background as seen through a polarizing microscope.
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A scanning electron micrograph shows the overlapping, shingle-like scales of a butterfly wing, with one scale broken to reveal its hollow interior structure.
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A high-magnification, false-colored scanning electron micrograph of a single spherical pollen grain with numerous spikes, rendered in electric blue and neon yellow against a solid black background.
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A high-angle black and white photograph of hexagonal basalt columns, with low-angle sunlight highlighting the rims and casting deep shadows in the crevices.
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A scanning electron micrograph of a single, spiny, spherical pollen grain resting on a smooth, dark surface with a scale bar in the bottom right corner.
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A close-up macro shot of a golden honeycomb with a single drop of viscous honey hanging from one of the hexagonal cells, illuminated by warm, soft backlighting.
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A close-up view of a honeycomb structure featuring hexagonal cells filled with golden honey and some capped with pale wax, illuminated by a warm, amber light.
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An aerial view of the salt crust at Badwater Basin, featuring a network of hexagonal polygons with raised ridges casting shadows across the white surface.
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A close-up view of a sunspot pair on the solar surface, featuring dark umbrae surrounded by grey penumbral filaments, with a bright, snaking flare ribbon connecting the spots against a background of golden solar granulation.
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A detailed anatomical cross-section illustration of human skin showing the epidermis, dermis, and subcutis layers, including a hair follicle, sweat glands, and blood vessels.
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A close-up macro view of textured, orange-hued pine tree bark with frost crystals lining the deep, dark crevices, illuminated by low-angle morning sunlight.
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A microscopic cross-section of a plant stem showing vascular bundles with red-stained xylem and blue-stained phloem, illuminated by brightfield light.
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A high-resolution close-up view of a sunspot group on the solar surface, featuring dark umbrae, a fibrous penumbra, and bright flaring kernels surrounded by golden solar granulation.
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A microscopic cross-section of compact bone tissue showing multiple circular osteons with concentric lamellae surrounding dark central canals, illuminated under polarized light against a black background.
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A microscopic view of a single centric diatom, featuring a circular, glass-like valve with radiating ribs and a marginal ring of pores, captured using differential interference contrast microscopy on a neutral grey background.
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A scanning electron micrograph of Penicillium mould, showing upright stalks ending in brush-like heads with chains of round spores, set against a black background with a 200-micrometer scale bar.
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A close-up view of a textured surface resembling aged film stock, featuring numerous vertical hairline scratches, white gouges, and scattered dust particles against a warm grey background.
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A macro close-up shot of honeycomb toffee, showcasing its intricate, porous structure with glassy amber walls and numerous air bubbles illuminated by warm light.
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A thin section of gabbro viewed under crossed polarized light, showing twinned plagioclase crystals with grey and white stripes alongside pyroxene grains displaying vibrant green and magenta interference colors.
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A cluster of triangular Triceratium diatoms with intricate, perforated silica structures glowing in gold and violet against a solid black background.
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A macro close-up of a dense cluster of soap bubbles forming a complex hexagonal lattice with bright white highlights and deep teal shadows.
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A yellow slime mold with a branching, vein-like network spreads across the surface of dark, damp tree bark, viewed through a circular microscope field of view.
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A dense, stippled pen and ink illustration of a large cluster of ladybirds overwintering on a textured rock surface, with light catching their wing cases.
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A high-resolution close-up view of the Sun's photosphere showing a granular pattern of convection cells with a small, dark sunspot pore at the center.
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A detailed botanical watercolor illustration of a plant cell featuring a large central vacuole, a nucleus, chloroplasts, and other organelles within a rigid cell wall.
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