Chinese Health Minister Chen Zhu (L) signs the Memorandum on the Understanding of Collaboration of Tuberculosis Prevention with Bill Gates, founder of the Bill & Melinda Gates Foundation in Beijing, capital of China, on April 1, 2009. China\'s health ministry and international software tycoon Bill Gates are teaming up to improve detection and treatment of tuberculosis (TB) in the country. China will introduce new diagnostic tests, TB drugs, patient monitoring strategies and health care worker training by using 33 million U.S. dollars provided by the Bill & Melinda Gates Foundation.