Zhong Zhong da Hua Hua an samar da su ne daga masana kimiyya daga Cibiyar Nazarin Neuroscience na Kwalejin Kimiyya ta kasar Sin a Shanghai, wanda Qiang Sun da Muming Poo suka jagoranci. Sun fitar da kwayar daga fibroblasts na jaririn da aka zubar da ciki (mai cin naman zuma ko Macaca fascicularis) kuma sun saka su a cikin kwayar halitta (ova) wanda aka cire kwayar halittar su. Kungiyar ta yi amfani da enzymes guda biyu don share ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙwalwar ƙwaƙ
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