The pig was only a few months old when its legs began to buckle. At first, the animal wobbled as if dizzy, struggling to stay upright on the smooth cement of the lab floor. Weeks later, it collapsed entirely. By the time it turned one, it was gasping for air.
For Jia Yichang, a tenured professor at Tsinghua University, watching these moments from his lab in Beijing was both heartbreaking and thrilling. He had been waiting years for this.
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