Bioluminescent Life

类型:面值 50 美分 Forever 邮票

Issue Date: 02/22/2018

Bioluminescence—the ability of some living things to generate their own light—occurs on many branches of the tree of life.With this sheet of 20 stamps, the U.S. Postal Service® showcases 10 examples of Bioluminescent Life.

每版 20 张 10.00 美元

Bioluminescence—the ability of some living things to generate their own light—occurs on many branches of the tree of life.With this sheet of 20 stamps, the U.S. Postal Service® showcases 10 examples of Bioluminescent Life.

Eight stamp images represent the work of some of the top explorers of the bioluminescent ocean realm, and two portray land-based species.The stamps feature:deep-ocean octopus (photo by Edith Widder); midwater jellyfish (photo by Edith Widder); deep-sea comb jelly (photo by Edith Widder); mushroom (photo by Taylor F. Lockwood); firefly (photo by Gail Shumway); bamboo coral (photo by Edith Widder); marine worm (photo by Edith Widder); crown jellyfish (photo by Edith Widder); a second type of marine worm (photo by Steve Haddock); and sea pen (photo by Edith Widder).

The pane contains 20 stamps, two of each design.At center top, the selvage features a transparent deep-sea comb jelly (photo by Gregory G. Dimijian), surrounded by images of the firefly squid (photo by Danté Fenolio).The title “BIOLUMINESCENT LIFE” appears on the selvage above the pane of stamps.

Bioluminescence among land-based species is relatively rare, but in the darkness of the deep ocean, where little or no sunlight penetrates, the phenomenon reigns supreme.Bioluminescent creatures use light to lure food, find mates, or to fend off predators.

Familiar to people over much of the world, fireflies provide scientists with easy means by which to investigate “living light.”Medical science has benefited tremendously from such study.Using the genes that enable bioluminescence, scientists can now make a cancer cell glow, then track its function and reproduction.Similar research is also vital to fighting Alzheimer’s, Parkinson’s, anemia, malaria, HIV, and many other diseases.

Art director Derry Noyes designed the stamps and selvage with existing photographs.

The Bioluminescent Life stamps are being issued as Forever® stamps.Forever Stamp(永久邮票)价值始终与当前 1 盎司邮资的 First-Class Mail® 相当。

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本页的销售编号:475704

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