LLB: the intermediate representation
（九）放射性物品，是指放射性物质中放射性活度和比活度均高于国家规定的豁免值的物质。
。新收录的资料对此有专业解读
Фото: Caroline Brehman / Reuters
A study investigating the emergence of squamous tumours in the upper gastrointestinal tract of the mouse shows that an initial tumour stress response triggers fibroblasts to remodel the underlying stroma, creating a fibronectin-rich precancerous niche that supports tumour survival.