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Earlier research found that the length of telomeres is related to early aging, the formation of tumors, and other diseases. Telomeres shorten as a cell splits, but if telomeres cannot shorten anymore, the cell dies.
The country began a voluntary organ donation trial in 2010 and promoted the practice across the country in 2013. Voluntary donation is the only legitimate source for transplants after organ trading was criminalized in 2011 and the use of organs from executed prisoners was banned in 2015.
China and Slovakia have a traditional friendship, said Li, who arrived in Sofia on Thursday for an official visit to Bulgaria and the seventh leaders' meeting of China and 16 Central and Eastern European countries.
Meanwhile, there have been two negative trends in the region. The free trade system has been seriously hit by rising unilateralism and protectionism, which threatens the future development of all countries and the well-being of their peoples, he noted.
来源：资阳报