英语语法分析

Objective To study the expression of substance P (SP) in human sudden erethistic death, and to seek objective morphological supports to diagnose sudden erethistic death for forensic medicine.

目的观察P物质在过敏性猝死人体咽喉和胃肠组织的表达，并探讨其在法医学鉴定中的作用和意义。