What is the fine-grained topic of the following text: This work was supported, in part, by grants from National Institutes of Health (1R21 HD049449), National Research Initiative Competitive Grants (2006-35203-17283, 2008-35206-18762, 2008-35206-18764, and 2008-35203-19120) from the USDA Cooperative State Research, Education, and Extension Service, American Heart Association (0655109Y and 0755024Y), Texas AgriLife Research (H-8200), National Natural Science Foundation of China (30371038 and 30528006), and the Outstanding Overseas Chinese Scholars Fund of The Chinese Academy of Sciences (2005-1-4). Only return the topic.
Research Funding and Grants