Tuesday, January 24, 2012

Giardia; A very tricky parasite in drinking water

Dr Hugo D. Luján of Catholic University of Córdoba in Argentina and the Howard Hughes Medical Institute, has found that the Giardia lamblia parasite changes its shape when meeting the human immune system. The parasite is known to cause about 200 million cases of diarrhea each year, and the research into its function is helping to develop a genetically modified strain that can serve as a possible vaccine for the disease.
The Giardia genome contains nearly 200 genes that code for surface antigens. Despite the large number of genes, each parasite displays only a single

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