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.
Result distribution among collection devices of all available, but independent samples (n = 120). All blue samples were collected with the Nitex dish, all red ones with MnCl2 tubes and all green ones with the Falcon method. Means of the different sample types are indicated by a thin line (samples below 0.1 ng/mL were excluded). All wild capture samples derived from different individuals.
