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.
Kaplan–Meier Curve of survival probability for the FAS (A) and the PPS (B) analysis. The experimental group showed better survival than the control group in both analysis sets, suggesting that MSC transplantation improved the survival rate of COVID‐19 patients
