Biologies of Race: Novel Modes of Engagement, Uncertain Suffering: Racial Health Care Disparities and Sickle Cell Disease. Carolyn Moxley Rouse (ed.). Berkeley, CA, and London, UK: University of California Press, 2009. xiv + 314 pp. (Cloth US$55.00; Paper US$24.95)Biomedical Ambiguity: Race, Asthma, and the Contested Meanings of Genetic Research in the Caribbean. Ian Whitmarsh (ed.). Ithaca, NY, and London, UK: Cornell University Press, 2008. viii + 231 pp. (Cloth US$65.95; Paper US$22.95)