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.
Analysis of C6 A/B allotypes. A 223-bp polymerase chain reaction (PCR)-amplified DNA fragment of exon 3 was restricted with HhaI. C6B alleles containing the restriction site are split into 122- and 101-bp fragments. C6A/A is a C6A homozygous control. The family tree is shown on the top.
