Lovell created the vaccine platform and has been experimenting with it for more than a decade. It consists of tiny spherical sacs called nanoparticles, which are made of cobalt and porphyrin with an ...

研究发现，应激诱导的厌恶性学习需要鞘氨醇激酶（sphingosine kinase，SPHK-1），它可产生 1 - 磷酸鞘氨醇（sphingosine-1-phosphate，S1P）。遗传和生化研究揭示了一条细胞间信号通路：肠道或皮下的 SPHK-1 通过神经元 G 蛋白偶联受体（G protein-coupled receptor ，SPHR-1 ...