Comparison of compound extract of folium ginkgo and salvia miltiorrhiza with single folium ginkgo extract on protection of cardiac cerebral vessel 银杏叶和丹参提取物与单味银杏叶提取物对心脑血管的保护作用比较
Unfortunately , egf and fgf are large molecules that have difficulty crossing the blood - brain barrier , the meshlike network of tightly woven cells that lines the blood vessels of the brain 遗憾的是, egf与fgf是大分子,很难穿过血脑屏障(这是由许多细胞紧密交织而成的网状构造,形成脑血管的内衬) 。