Why is it popular or well known? Yogurt as a kind of traditional food has a long development history. With the evolution of food technology it has been improved in many respects. The fertility of nutrients and the special texture are the main reasons why yogurt has become a popular food. Why is it important to study it? Dark matter is believed to be present due to discrepancies in astronomical observation; one of these discrepancies means dark matter is crucial in determining the fate of the universe. What is its history? The first cases of SARS emerged in late 2002 and early 2003, with the first confirmed infections at the Prince of Wales Hospital, Hong Kong. What is problematic about it? SARS-CoV has caused 8000 infections with a mortality rate of 9-10% (Wong and Hui 2003, Tseng, Tseng, Perrone et al. 2005, Liang, Zhu, Guo et al. 2004). What are its categories or components? Erythropoietin consists of 165 amino acids, with four oligosaccharide side chains attached. What does it do? The human oestrogen receptor is part of the Nuclear Receptor super family. The characteristic mechanism of these intracellular receptors is to bind their ligand, forming a ligand-receptor complex, which then acts as a transcription factor altering gene expression appropriately. https://339efcb25eb75e967b0d-ff8eeadd950d51fd1fc939dca75b3973.ssl.cf1.rackcdn.com/assets_green.swf