<p style="text-align: justify;">Sunday, Jan. 16, 2011. By CESAR CHELALA. NEW YORK — Cuba's announcement that its scientists have developed a vaccine to improve the lives of lung-cancer patients is reason for optimism. Cautious optimism is in order, though, since previous claims have been made before by several scientists in dealing with this disease — claims that later proved unfounded.In 1991 I headed a U.N. mission to Cuba of Latin American physicians. We were asked to evaluate Cuba's production of interferon, an anti-viral substance, and its applications. We were gladly surprised at the excellent technical level attained by Cuban scientists and the progress they had made in producing interferon.
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