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    Colored scanning electron micrograph of pollen grains from marigold flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from marigold flower.
    Spring flowers representing healthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy human lungs, conceptual studio shot.
    Closeup of a bee on a flower against blurred background — Stock Photo
    Closeup of a bee on a flower against blurred background
    Spring flowers representing healthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy human lungs, conceptual studio shot.
    Spring flowers representing healthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy human lungs, conceptual studio shot.
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower.
    Spring flowers representing unhealthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing unhealthy human lungs, conceptual studio shot.
    Section of a flower bud — Stock Photo
    Section of a flower bud
    Close-up of a clouded yellow butterfly (Colias crocea) on a flower, Majorca, Spain — Stock Photo
    Close-up of a clouded yellow butterfly (Colias crocea) on a flower, Majorca, Spain
    Honeybee on a dark pink Sedum flowers. (Apis mellifera) — Stock Photo
    Honeybee on a dark pink Sedum flowers. (Apis mellifera)
    Spring flowers representing healthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy human lungs, conceptual studio shot.
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Lily flower anther — Stock Photo
    Lily flower anther
    Spring flowers representing unhealthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing unhealthy human lungs, conceptual studio shot.
    Growing bush of aromatic purple lavender with bee pollinating flowers on sunny day against blurred background — Stock Photo
    Growing bush of aromatic purple lavender with bee pollinating flowers on sunny day against blurred background
    Flower, X-ray, radiology scan — Stock Photo
    Flower, X-ray, radiology scan
    A spider dangles above a flower — Stock Photo
    A spider dangles above a flower
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Backlit close up of honey bee pollinating lavender flowers — Stock Photo
    Backlit close up of honey bee pollinating lavender flowers
    Primula pollen grain — Stock Photo
    Primula pollen grain
    Red amaryllis flower — Stock Photo
    Red amaryllis flower
    A beautiful bouquet of flowers — Stock Photo
    A beautiful bouquet of flowers
    Spring flowers representing healthy and unhealthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy and unhealthy human lungs, conceptual studio shot.
    Yellow rose flower in ceramic vase — Stock Photo
    Yellow rose flower in ceramic vase
    Pollen grains of mimosa flower, digital illustration. — Stock Photo
    Pollen grains of mimosa flower, digital illustration.
    Honeycomb frame inside wooden box covered with bees during honey harvesting in apiary near daisy white and yellow flower — Stock Photo
    Honeycomb frame inside wooden box covered with bees during honey harvesting in apiary near daisy white and yellow flower
    Pollen grains of mimosa flowers, digital illustration. — Stock Photo
    Pollen grains of mimosa flowers, digital illustration.
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower.
    Digital illustration of pollen grain on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grain on anther of Chinese hibiscus flower.
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Honey bee visiting crocus blossoms; Astoria, Oregon, United States of America — Stock Photo
    Honey bee visiting crocus blossoms; Astoria, Oregon, United States of America
    Spring flowers representing unhealthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing unhealthy human lungs, conceptual studio shot.
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Top view of blossoming lush bud of white lilies eustoma at daylight — Stock Photo
    Top view of blossoming lush bud of white lilies eustoma at daylight
    Top view of blossoming lush bud of white lilies eustoma at daylight — Stock Photo
    Top view of blossoming lush bud of white lilies eustoma at daylight
    Closeup view of flower pollen in preserving glass jar and with flowers around — Stock Photo
    Closeup view of flower pollen in preserving glass jar and with flowers around
    Backlit close up of honey bee pollinating lavender flowers — Stock Photo
    Backlit close up of honey bee pollinating lavender flowers
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Closeup view of bumble bee collecting pollen from a flower — Stock Photo
    Closeup view of bumble bee collecting pollen from a flower
    Woman standing in a sunflower field in kansas city mo — Stock Photo
    Woman standing in a sunflower field in kansas city mo
    Bee pollen in metal tin with spoon — Stock Photo
    Bee pollen in metal tin with spoon
    Delicate yellow rapeseed flowers blossoming on spacious countryside field on clear sunny weather — Stock Photo
    Delicate yellow rapeseed flowers blossoming on spacious countryside field on clear sunny weather
    Close up view of pink flower's stamen over dark background — Stock Photo
    Close up view of pink flower's stamen over dark background
    Pollen grain, light micrograph. Pollen grain is the microscopic body that contains the male reproductive cell of a plant. — Stock Photo
    Pollen grain, light micrograph. Pollen grain is the microscopic body that contains the male reproductive cell of a plant.
    Extreme close up of pink flower stamen — Stock Photo
    Extreme close up of pink flower stamen
    Closeup view of bee on sunflower — Stock Photo
    Closeup view of bee on sunflower
    Closeup view of flower pollen in glass jar with flowers and spoon on white surface — Stock Photo
    Closeup view of flower pollen in glass jar with flowers and spoon on white surface
    Top view of blossoming lush bud of white lilies eustoma at daylight — Stock Photo
    Top view of blossoming lush bud of white lilies eustoma at daylight
    Chrysanthemum flower bud, light micrograph. — Stock Photo
    Chrysanthemum flower bud, light micrograph.
    Primrose (Primula sp.) pollen grain, coloured scanning electron micrograph (SEM). — Stock Photo
    Primrose (Primula sp.) pollen grain, coloured scanning electron micrograph (SEM).
    Geranium sp. pollen grain — Stock Photo
    Geranium sp. pollen grain
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    Macro view of stamens with pollen and pestle of blooming red tulip flower — Stock Photo
    Macro view of stamens with pollen and pestle of blooming red tulip flower
    Honey Bee pollinating a sunflower, Indonesia — Stock Photo
    Honey Bee pollinating a sunflower, Indonesia
    Spring flowers representing healthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy human lungs, conceptual studio shot.
    Spring flowers representing healthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy human lungs, conceptual studio shot.
    Coloured scanning electron micrograph (SEM) of a wood anemone (Anemone nemerosa) anther (male reproductive part) covered in pollen. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a wood anemone (Anemone nemerosa) anther (male reproductive part) covered in pollen.
    Coloured scanning electron micrograph (SEM) of an anther (male reproductive part) from a bay tree (Laurus nobilis) flower. — Stock Photo
    Coloured scanning electron micrograph (SEM) of an anther (male reproductive part) from a bay tree (Laurus nobilis) flower.
    A 40-year-old woman stands in a field of sunflowers at sunset — Stock Photo
    A 40-year-old woman stands in a field of sunflowers at sunset