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.
Growth curves and CEF invasion test. a Growth curves of the 4 strains and b determination of the invasion rates of the recombinant strains in vitro. By stimulating CEFs and counting the number of intracellular bacteria, the cell invasion rates were calculated. Statistically, P < 0.001 was statistically significant and marked as triple asterisks
