endocon (plural endocons)
(biochemistry) The part of a conjugated metabolite which is derived from a natural product of the metabolizing organism.

NPR 2009-03-27

From NPR news in Washington. I'm Jack Speer. A key Senate committee has sighed off on President Obama's budget blueprint setting the stage for debate on the 3.6 trillion dollars spending package some time next week. Approval by the Senate Budget Com

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2009年NPR美国国家公共电台3月

SSS 2009-12-29

Could there be a substance that both gives us the munchies and can help combat obesity? There may indeed be, according to research published in the Proceedings of the National Academy of Sciences. The Monell Center in Pennsylvania partnered with Kyus

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CNN 2010-11-04

CARL AZUZ, CNN STUDENT NEWS ANCHOR: There's an old saying: It's not what you know, it's who you know. It might also be how you act. We're gonna make sense of that in just a bit. I'm Carl Azuz. Welcome to CNN Student News! First Up: Midterm Elections

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CNN 2011-02-06

Fridays are awesome! Just like the students and teachers at Ron Clark Academy, where I had the privilege of speaking yesterday. I'm Carl Azuz, bringing you 10 minutes of headlines, leaving out the commercials. Let's go ahead and get started. The fina

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NPR 2009-08-02

Iran's state-run television station says three American tourists have been arrested after entering the country from northern Iraq without permission. The State Department is looking into the reports, as NPR's Allison Keyes reports. The three were re

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2009年NPR美国国家公共电台8月

英语博客：ESL Podcast 731 - Hints and Innuendo

Roberta: You know, my birthday is coming up. John: Yeah, I know. What are you getting at? Roberta: Nothing. I was just thinking that its kind of an important birthday, a major birthday. John: Yes, I know. Spit it out. What are you driving at? Roberta

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What makes people dizzy when they spin? Rolling down a hill or spinning around in endless circles causes dizziness or vertigo because hair-like sensory nerve cells in our ears send wrong messages to our brain. The motions of our bodies are detected b

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经济学人341:锻炼也会上瘾奔跑的奥秘

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AF harmonic distortion