单词：stem growth hormone
单词：stem growth hormone 相关文章
By Melinda Smith Washington 24 April 2007 One of the largest groups of milk producers in the United States has set an August first deadline for its members to stop treating their cows with a growth hormone, or pay more to get their milk to market. Th
2007年VOA标准英语（四月）
President Obama has lifted restrictions on the use of federal money for research using embryonic stem cells. Some researchers are already making progress using stem cells from umbilical cord blood, which entails no controversy since there is no dest
VOA标准英语2009年(三月)
This is the VOA Special English Agriculture Report. We talked last week about when and how to prune plants. Today we tell you about some new understanding of why cutting the main branch of a plant or tree can lead to better development. The findings
VOA慢速英语2009年（十）月
Researchers believe activity and interaction activated a communication channel in mice that prompted fat cells to stop releasing a hormone which accelerates cancer growth. Related Links Cell New research has found that mice with cancer are better abl
VOA标准英语2010年(七)月
Researchers have stumbled across what may turn out to be a miracle（奇迹） treatment for hair loss in humans. The scientists were investigating how stress affects the digestive system when they made the discovery. The team at the University of Ca
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