1. A regular publication presenting articles on a particular subject is A. hypothesis B. theory C. journal 2. A vector carries the parasitic that causesschistosomiasis is A. tsetse fly B. freshwater snails C. liver fluk D. peer review D. nasal cavity 3. who worked to develop a vaccine using genetic engineering is A. Professor Tilahun Yilma B. DrTewolde BerhanGebre Egziabher C. DrTsehayneshMeselle D. DrBerhane Asfaw