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1. A 37-week-old infant was delivered by cesarean section and discharged from a Connecticut hospital when he was 10 days old. Two days later he was lethargic and had a fever. When he was readmitted to the hospital, he had multiple brain abscesses caused by Citrobacter diversus. After a prolonged illness, the baby died. A second infant with a normal pregnancy and delivery died of C. diversus meningitis after a short illness. Nine infants in the hospital nursery had umbilical cord colonization by C. diversus. Environmental cultures were negative for hospital equipment. a. What is the normal habitat of this gram-negative, facultatively anaerobic, non-endospore-forming, lactose-positive rod? b. Provide a plan for identifying the source of infection and preventing further infection. 2) Salmonella heidelberg gastroenteritis occurred on three cruises aboard the T.S.S. Festivale. Figure 14.4 shows on-board clinic visits for diarrheal illness between February 10 and March 3. a. Explain the incidence pattern shown on the graphb. What are probable modes of transmission? c What changes would you recommend before the ship books more cruises after March 3?(30 points)A 56-year-old Army officer received a smallpox vaccination at a military vaccination clinic. Within 2 weeks, a painful ulcer was noted at the vaccination site. Because of the appearance of an increasing number of peripheral lesions and because of continued enlargement of the initial ulcer, he was treated. Eventual recovery was complicated by Pseudomonas sepsis and the need for a skin graft at the vaccination site. What was the cause of the ulcer and lesions, and what were the treatments? What caused the Pseudomonas infection?
Why are karyotypes done of mitotic cells? a. because mitotic cells are usually easy to access for examination and analysis of a genome b. because mitotic cells contain replicated homologs that are easy to identify c. all of these are true d. be..
Describe the role of ubiquitin in mediating intracellular protein breakdown.This description must include a description of the ubiquitination pathway?
Ron has mild hemophilia that the can control by taking a clotting factor. He married Lydia, whom he met at the hospital where he and Lydia's brother, Marvin, receive their treatment. Lydia and Marvin's mother and father, Emma and Clyde do not have..
Explain how adjusting the pH of your reaction flask can be used to artificially bypass the effects of the inhibitors used in your experiments. What would you add to your flask if you were actually going to perform this experiment?
Provide two signs of SCID. Explain two options for expecting parents who have family members with SCID and are concerned their child will be affected with the immunodeficiency.
Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species that lived side by side in parts of their ranges. However , recent books show them as eastern and western forms of a single species
Explaining the cellular respiration and therocess of photosynthesis of plants.
Describe the four adhesion steps that leukocytes undergo in order to accumulate in a blood vessel.
Issues of diversity: For example, is there heterosexism present in the article? Do they assume the person reading the article is sexually active with a member of the other sex?
A particular variety of corn has a gene for kernel color and a gene for height with the phenotypes CC,Cc: purple kernel.
What effect would it have over the results of study? Draw up a two-by-two table displaying the misclassification, then determines estimates of the risk ratio for both true and the misclassified results.
Given the function of chloroplasts, which of the following best describes a cell in the root of a particular plant?
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