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.
Measurement of CD4+ cells. Positive cell number/field/slice (mean ± standard deviation, n=3).
Notes: *P<0.05; **P<0.01.
Abbreviations: ALA, 5-aminolevulinic acid; PLGA, polylactic-co-glycolic acid; NP, nanoparticle; PDT, photodynamic therapy.
