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.
Schematic of the two‐node and three‐node motifs. The two‐node motifs include the unidirectional motif and the reciprocal motif. The three‐node motifs include 13 classes motifs labeled ID 1 to 13. [Color figure can be viewed at http://wileyonlinelibrary.com]
