The shikonin and its derivatives is produced by suspension cultured Lithospermum erythrorhizon cells in M 9 medium.紫草是一种重要的中草药材,其培养细胞在M9培养基中可以大量生产主要的药物成分紫草宁....
Volunteers have identified amazingly subtle features in the aerogel collectors.志愿者识别出了气凝胶中令人惊异的细微结构.Q. Why was aerogel used on Stardust?问: 为什么“星辰”要使用气凝胶 呢 ?Next, find the surface of the aerogel.然后, 搜寻气凝胶的表面....