原发性肝癌(primary carcinoma of the liver),是我国最常见的恶性肿瘤之一,仅次于胃癌、食道癌,我国发病人数约占全球半数以上。研究发现环氧化酶-2(cyclooxygenase-2, COX-2),在肝癌细胞中存在着高表达,且在肝癌的发生和发展中起着重要作用。熊果酸(ursolic acid, UA), viili胞外多糖(exopolysaccharides,EPS)
Upconversion (UC) lanthanide nanomaterials have attracted enormous attention in the last two decades thanks to their unique ability to convert low-energy infrar
Along with the increase of the number of failed satellites,plus space debris,year by year,it will take considerable manpower and resources if we rely just on gr