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.
(A) Schematic example of Shapes 1 and 2 with (left pair) original texture schemes and (right pair) the texture schemes exchanged. (B) Example of Textures 1 and 2 with (left pair) original shapes and (right pair) the shapes exchanged. Figure adapted from Lacey et al. (2011).
