图 5.
Transwell migration experiment results (Inverted phase contrast microscope×200)
Transwell 迁移实验（倒置相差显微镜×200）
a. 对照组；b. 实验组
a. Control group; b. Experimental group
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.