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.
Viral genome copies detected in allantoic fluid and number of days to embryonic death with a low concentration (1 EID50) of wild and vaccine TW2575/98 strains. DPI means day post-inoculation. The regression lines were drawn using excel and the virus replication slopes (regression coefficients) vs DPI from wild and attenuated strains were significantly different (p < 0.05) using Student’s t test [21]. Solid trend line stands for vaccine strain and dashed trend line for wild strain
