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Purchase a tote bag featuring the photograph "Common Ragweed" by Meckes/ottawa. Our tote bags are made from soft, durable, poly-poplin fabric and include a 1" black strap for easy carrying on your shoulder. All seams are double-stitched for added durability. Each tote bag is machine-washable in cold water and is printed on both sides using the same image.
Color enhanced scanning electron micrograph (SEM) of pollen grains (green) from the common ragweed (Ambrosia artemisiifolia) covered in fine dust... more
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Color enhanced scanning electron micrograph (SEM) of pollen grains (green) from the common ragweed (Ambrosia artemisiifolia) covered in fine dust (brown). The grains have a spiked outer wall (exine), which may assist in their dispersal by improving their adherence to pollinating insects. The characteristic surface of pollen grains is used by botanists to recognise and classify plants. Each pollen grain contains a male gamete (reproductive cell) that is intended to fertilise an egg or ovule (female gamete), and initiate the formation of a seed for a new plant. These pollen grains are an allergen that may cause hay fever in susceptible individuals. Magnification x3400 when printed at 10 cm wide.
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