Syairah, S. , Rajikin, M. , Sharaniza, A.. "Supplementation of Annatto (Bixa orellana)-Derived δ-Tocotrienol Produced High Number of Morula through Increased Expression of 3-Phosphoinositide- Dependent Protein Kinase-1 (PDK1) in Mice". World Academy of Science, Engineering and Technology, Open Science Index 103, International Journal of Medical and Health Sciences (2015), 9(7), 786 - 790.