Department;
of;
Biochemistry,;
School;
of;
Basic;
Medical;
Sciences,;
Tongji;
Medical;
College,;
Huazhong;
University;
of;
Sciences;
and;
Technology,;
Wuhan;
430030;
Department;
of;
Biochemistry,;
School;
of;
Basic;
Medical;
Sciences,;
Tongji;
Medical;
College,;
Huazhong;
University;
of;
Sciences;
and;
Technology,;
Wuhan;
430030;
human; vascular; endothelia; growth; factor; nested; PCR; variant; molecular; clone;