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MADRID (07/10/2010).- The two little Panda bears borned at Madrid Zoo aquarium can be watched from today. The cubs, whose genders are not yet known, were conceived through artificial insemination after mother Hua Zui Ba and father Bing Xing failed to procreate on their own. They are the first giant panda twins to be conceived using the method outside of China..Photo: Cesar Cebolla / ALFAQUI