1. Jenny, a 6-year-old child who has been raised in a germ-free environment from birth, is a victim of one of the most severe examples of an abnormal immune system. Jenny also suffers from cancer caused by the Epstein Barr virus. Relative to this case: (a) What is the usual fate of children with Jenny’s condition and similar circumstances if no treatment is attempted? (b) Why is Jenny’s brother chose as the hematopoietic stem cell donor? (c) Why is her physician planning to use the umbilical cord blood as a source of stem cells for transplant if her brother’s stem cells fail (what are the hoped for results)? (d) attempt to explain Jenny’s cancer. (e) What similarities and dissimilarities exists between Jenny’s illness and aids? (10 points, 2 point each). Answer:
This was answered yesterday, please check your previous topics.
Post Merge: 11 years ago
3. Once almost a rite of childhood, tonsillectomy (surgical removal of the tonsils) is now rarely performed. Similarly, while ruptured spleens were once routinely removed, they are now conserved whenever possible. Why should these lymphoid organs be preserved whenever possible? (4 points). Answer:
The circle of tonsils around the opening of the pharynx is protective because the tonsils serve to invite pathogens in and expose the body defense system to them so a person can build immunity.
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