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A 35-year-old man with HIV complains that he has had a "bad" taste in his mouth and discoloration of his tongue for the past 6 weeks.
There are areas of adherent, yellow-tan, circumscribed plaque on the oropharynx and the tongue. This plaque can be scraped off as a pseudomembrane to show an underlying granular, erythematous base. The material is composed of organisms and inflammatory debris. Gram stained smear shows yeast with pseudohyphae. Culture shows pearly colonies typical of yeast. Germ tube test is positive. Invasive infections may occur in immunocomprised individuals. Pseudohyphae may be seen in tissue section with PAS stain.
What is the MOST LIKELY diagnosis? What is a likely causative organism? What is the possible treatment?
In a separate case, a blood culture from a neutropenic (<100 neutrophils/ul) 50-year-old woman on broad spectrum antibiotics grew a yeast. Tests for germ tubes were positive in the microbiology laboratory. What is the likelyorganism?
To determine whether this difference is significant, you collect data on the seating preferences for the students in your class. A researcher hypothesizes that individuals who listen to classical music will score differently from the general popula..
Find the probability that a randomly selected baseball will have a weight between 5.11 and 5.13 ounces and a circumference between 9.04 and 9.06 inches
A fair six-sided die is rolled twice. What is the probability both numbers are even? Round to the nearest hundredth.
For the Nyquist plots of Problem P8.1, use the Nyquist criterion to ascertain the stability of the various systems. In each case, specify the values of N, P, and Z.
In 2006 the U.S. Internal Revenue Service (IRS) received 132,275,830 individual tax returns (The 2008 New York Times Almanac). The actual number of each type of individual return received by the IRS in 2006 is given below:
a polling agency wants to determine the size of a random sample needed to estimate the proportion of homeowners who
What is the decision regarding the null hypothesis (is there a difference in the mean numbers of cameras sold at the three department store chains)?
Translate the following arguments into symbolic form and use the first four rules of inference to derive the conclusion of each.- If the drug interdiction program is strengthened only if cocaine becomes more readily available, then either the numbe..
The .95 confidence interval for the population μ is (577.1,623.4).- Use a boxplot to verify that there are no outliers.
a. If the researcher uses a two-tailed test with ox=.05, what is the power of the hypothesis test? b. again assuming a two-tailed test with ox=.05, what is the power of the hypothesis test if the sample size is increased to n=25?
The management of Quality Airlines has decided to base its overbooking policy on the stochastic single-period model for perishable products, since this will maximize expected profit.
Hooded rats: object play counts. The researchers who conducted the study in the previous exercise also recorded the number of times each of three types of behavior (object play, locomotor play, and social play) occurred.
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