Friday, Jul 11, 2003
Friday, Jul 11, 2003 |
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Beijing: Chinese doctors, working in a laboratory, claimed to have succeeded in nurturing the world's first in-vitro embryonic human heart, the size of a grain of rice, the state media reported on Thursday. The tiny human heart was still beating as of 9 a.m., local time on Thursday, at a rate of 20 per second, according to doctors with the Procreation Centre Laboratory of the Shenyang Women and Infants' Hospital in Shenyang, capital of Liaoning province. To date, there have been no similar cases at home or abroad, Chinese doctors were quoted as saying by Xinhua news agency. The president of the hospital, Qu Wenyu, said the heart is growing well and taking on the shape and structure of an adult heart. ``The ventricle and atrium of the miniature heart are beating synchronously,'' Dr. Qu said. The ventricle of the tiny heart initially beats between 18 and 22 times, and the atrium, 60 to 80 times per second, Dr. Qu said, adding he and his colleagues were mystified by the slower heartbeat. ``Compared to a normally-developed embryonic human heart, this heart is much smaller in size,'' said doctor Wang Tong, who is in charge of the research. — PTI
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