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.
HBB-like genes cluster haplotypes: (A) Haplotypes defined by presence (+) or absence (−) of specific restriction sites that are associated with the HbS mutation; LCR = locus control region. (B) Global distribution of HBB haplotypes. CAR = Central African Republic, BEN = Benin, CAM = Cameroon, SEN = Senegal.
