Fig 5. Pollen quality: bars represent the percentage of raw proteins in bee-bread in 2009 and 2010.
Values on y-axis range from 0 to 30%.
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.