| 单词 | chemical messenger |
| 释义 | chemical messenger There must, he deduced, be a chemical messenger that passes down through the plant carrying the tip's instructions. Times, Sunday Times These are all due to the disease causing the loss of certain brain cells that produce a chemical messenger called dopamine. The Sun In the late 1970s, scientists first suspected that a gaseous molecule could also act as a chemical messenger within mammalian cells. The Scientist It was found that ultraviolet rays in sunlight help the skin to release a chemical messenger called nitric oxide. Times, Sunday Times They open outwards at the crural papillaesmall wart-like bumps on the belly side of the legand secrete chemical messenger materials called pheromones. Retrieved from Wikipedia CC BY-SA 3.0 |
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