Six pregnant women participated in a small trial in which placenta-derived stem cells were applied to fetal spinal cords and the treatment was found to be safe.
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2021—2025 年度,44 个行业研发投入金额呈现整体扩张的态势,说明重视研发不只是龙头和腰部企业的行为,而且成为了更加广泛的共同行动。另一方面,研发均值下滑的行业集中在末端,印证了行业整体分化的现象。典型案例来自房地产和教育行业,在“去杠杆”“双减”等政策催化下,市场步入格局重塑阶段,企业纷纷降本增效或是寻求转型路径。