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.
Maximum likelihood trees. Nucleotide sequences from maternal time-of-delivery PBMC (blue), maternal time-of-delivery aNAB culture cells (red), and infant first-positive-time-point PBMC (green). Horizontal branch lengths are drawn to scale, with the black bar representing 10% divergence. IU, in utero; IP, intrapartum.
