这篇研究报道了一种创新的纸基电化学芯片平台，用于三阴性乳腺癌（TNBC）液体活检中循环miRNA-21的便携式检测。通过金纳米颗粒（AuNPs）修饰的纸基丝网印刷电极（SPE）和亚甲基蓝（MB）标记的DNA探针，实现了标准溶液和血清中miRNA-21的高选择性检测（LOD=1.2 nM）。

The continuation of national exams in active conflict zones has been made possible in part by the United Nations Children's Fund (UNICEF), which transported sealed trunks of exam papers from Kinshasa ...