^pof;
Medical;
Biology,;
Chinese;
Academy;
of;
Medicine;
Science,;
Peking;
Union;
Medical;
College,;
Yunnan;
Key;
Laboratory;
of;
Vaccine;
Research;
and;
Development;
on;
Severe;
Infectious;
Diseases,;
Kunming;
650118,;
China;
^pConvax;
Biotechnology;
Co.,;
Ltd.,;
Taizhou;
225300,;
China;