alb3797950
ragweed pollen
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Title: ragweed pollen
Caption: Ragweed pollen. Colored scanning electron micrograph (SEM) of pollen grains (pink) on the stigma (green) of a ragweed plant (Ambrosia sp.). These spiky pollen grains contain the male sex cells of the plant. The multi-lobed stigma, the surface of the flower's female sex organ, the carpel, is where the pollen germinates. Ambrosia sp. is a daisy-like flower which grows in bare and waste ground. Its pollen is wind-borne and released in great quantities for cross-pollination. Ambrosia sp. pollen acts as an allergen causing hay fever (allergic rhinitis or pollinosis) in susceptible individuals. Magnification: x150 at 5x7cm size. Magnification: x75 at 35mm size.
Category: SCIENCE • Plants & Trees
Credit: Album / Science Source / Biophoto Associates
Releases: ? Model Release: No - ? Property Release: No
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Image size: 4531 × 2991 px | 38.8 MB
Print size: 38.4 × 25.3 cm | 1783.9 × 1177.6 in (300 dpi)
Keywords: ALLERGEN • ALLERGENS • ALLERGIES • ALLERGY • AMBROSIA SP. • AMBROSIA SPECIES • BIOLOGY • BOTANICAL • BOTANY • BOTANY • BOTANY • CAUSE • COLOUR PINK • DIAGRAM • ENLARGEMENT • GREEN • HAY FEVER • HORIZONTAL • IMAGE • MAGNIFICATION • MEDICAL • MEDICINAL • MICROGRAPH • MICROGRAPHS • MICROGRAPHY • PHOTO • PINK (COLOUR) • PINK COLOR • PINK VALLEY • PINK • PINKS • PLANT • PLANTA • PLANTAE • PLANTS & TREES • PLANTS • POLLEN GRAIN • POLLEN GRAINS • POLLEN • POLLINOSIS • RAGWEED PLANT • RAGWEED PLANTS • RAGWEED POLLEN GRAIN • RAGWEED POLLEN GRAINS • RAGWEED POLLEN • RAGWEED • RHINITIS • SCANNING ELECTRON MICROGRAPH • SCANNING ELECTRON MICROGRAPHS • SCANNING ELECTRON MICROSCOPE • SCI • SCIENCE AND TECHNOLOGY WISSENSCHAFT SCI • SCIENCE • SCIENCE-TECHNOLOGY • SCIENCE_AND_TECHNOLOGY WISSENSCHAFT SCI • SEM IMAGE • SEM IMAGES • SEM • SHARES • STIGMA • STOCK • STOCKS (FINANCE)
