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Micrografía de un grano de polen

A scanning electron micrograph of a single lily pollen grain, featuring a reticulate wall with raised ridges and sunken pits, and a prominent central furrow, false-colored in gold against a dark charcoal background.

A lily pollen grain in a scanning electron micrograph, its reticulate wall a net of raised ridges over sunken pits, one long furrow running down the grain, false-coloured warm gold on charcoal, 2500x magnification Ver más

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A scanning electron micrograph shows numerous spiky, mustard-yellow pollen grains scattered against a dark background, with one smooth, tricolpate grain positioned near the center.

A scanning electron micrograph of an insect antenna, showing a central shaft with numerous fine, branching sensory hairs and a pitted cuticle surface.

A scanning electron micrograph of a gecko toe pad showing rows of curved lamellae covered in dense, branching setae with spatula-like tips, false-colored in teal against a dark charcoal background.

A microscopic view of a circular, symmetrical diatom shell featuring intricate geometric patterns and iridescent light effects against a dark blue background.

A single Purkinje neuron with an extensive, tree-like dendritic arbor extending from a central cell body, captured in a Golgi stain against a warm amber background.

A circular diatom shell with intricate geometric patterns and a glass-like structure is displayed against a solid black background in a dark-field microscopy style with blue and white highlights.

A scanning electron micrograph of the underside of a hydrangea leaf showing multiple open stomatal pores, pavement cells, and a single trichome.

A close-up macro photograph of a polished and etched iron meteorite slice displaying a distinct Widmanstätten pattern of intersecting metallic bands, set against a dark background with side lighting.

A microscopic view of squid skin showing vibrant ruby, amber, and brown chromatophores scattered across a translucent surface with iridescent blue cells.

A top-down macro photograph of a green sea urchin test, showcasing its intricate radial symmetry, rows of tubercles, and central apical system against a neutral gray background.

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.

A 3D digital illustration of a cell in prophase, featuring condensed purple chromosomes, a fading nuclear envelope, and two green spindle poles with radiating fibers inside a translucent cell on a pale blue background.

A translucent amber swell shark egg case is attached to a dark kelp holdfast underwater, illuminated from behind to reveal the developing embryo and yolk inside.

A close-up view of honeycomb weathering in sandstone rock, illuminated by golden sunset light that casts deep shadows into the hollows.

A close-up macro photograph of a dried poppy seed capsule against a dark background, illuminated by side lighting that casts shadows from the ribbed crown.

A close-up view of a giant water lily leaf with a spiny, purple-veined underside, partially curled and illuminated by golden sunrise light against dark water.

An aerial view of a camel caravan traveling along a sandy ridge in a desert at sunrise, casting long shadows across the dunes.

A long, translucent siphonophore drifts through the dark, deep ocean, illuminated by faint internal bioluminescence amidst falling marine snow.

A high-magnification scanning electron microscope image of a textured, spherical pollen grain against a black background, featuring selective false-color highlights in pink, orange, and blue.

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.

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.

A scanning electron micrograph of a circular Coscinodiscus diatom featuring intricate glass lattice patterns and radial symmetry, rendered in iridescent teal and violet against a black background.

A macro close-up of a pale lime green, feathery insect antenna with delicate, comb-like sensory hairs against a solid black background.

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.

A high-angle close-up of a grey limestone slab densely packed with fossilized crinoid stems and feathery crowns, illuminated by low-angle sunlight that highlights the textures against patches of green moss.

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 macro close-up of soap foam bubbles with iridescent magenta, gold, and green swirling films against a dark background, illuminated by soft light from the left.

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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