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.
Retention of recombinant GDF-5 protein in tendon grafts determined using an ELISA assay. Data are presented as mean ± SEM, normalized to the surface area of the graft. Asterisks represent significant differences, **p < 0.01.
GDF-5: growth and differentiation factor 5; ELISA: enzyme-linked immunosorbent assay; SEM: standard error of the mean.
