Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
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connected to the .gov website. Share sensitive
information only on official, secure websites.
Base preferences for CRISPR/Cas9 system. Cas9 protein is shown in orange. PAM and seed sequences are shown in red. Base preferences are shown in blue. Scissors indicate cleavage sites. The single-letter DNA code is used (N=A, T, C, G; R=G or A).
