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.
Quantification with cfDNA. Serially diluted cfDNA representing donor DNA, was spiked into a constant level of cfDNA representing the recipient DNA. The fraction of the spiked DNA was tested and spotted at high (A) and low levels (B) of background cfDNA.
