1. Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, P.R. China
2. Bee Product Quality Supervision and Testing Center, Ministry of Agriculture, Beijing 100093, P.R. China
3. Laboratory of Risk Assessment for Quality and Safety of Bee Products, Ministry of Agriculture, Beijing 100093, P.R. China
4. Texas Heart Institute, St Luke's Episcopal Hospital, Houston, TX 77030, USA
5. Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
6. Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 10070, P.R. China
7. Henan Enginerring Laboratory of Antibody Medicine, Medical School of Henan University, Kaifeng 475001, P.R. China
8. Key Laboratory of Pollinating Insect Biology, Ministry of Agriculture, Beijing 100093, P.R. China