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.
Relationship between within-host fitness in the local host and the median within-host fitness across all foreign hosts. The solid line represents the null hypothesis of equal effects in all hosts. The dashed line represents the linear model that best fits the data.
