Which of the following is an age-related change in eyesight?
A) Pupils enlarge
B) Depth perception increases
C) Farsightedness often develops
D) Visual acuity improves
C
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The intravesical route of administration is used to administer chemotherapy drugs into the ________
A) lungs B) abdomen C) spinal cord D) bladder
Answer the following statement(s) true (T) or false (F)
1. Women are more likely than men to relapse to smoking due to social pressure. 2. Snus is a form of spit tobacco. 3. The smoke from cigars contains fewer toxins and carcinogens than smoke from cigarettes. 4. Clove cigarettes contain tobacco. 5. Bidis contain less nicotine than ordinary cigarettes.
Identify which of the following describes how antigen processing and presentation of self antigens by thymic epithelial cells differs from that of antigen-presenting cells in peripheral tissues. (Select all that apply.)
a. Thymic epithelium expresses MHC class I molecules but not MHC class II molecules. b. Thymic epithelium uses cathepsin L for proteolytic degradation of self proteins. c. Thymic epithelium expresses MHC class II molecules but not MHC class I molecules. d. Thymic epithelium uses the transcription factor AIRE to activate thymic expression of tissue-specific genes. e. Thymic epithelium expresses transcription repressor protein FoxP3.
Five-year-old Thomas has brain cancer and chemotherapy and radiation have left him severely immunocompromised. He has a life threatening fungal infection that has not responded to other agents. The doctor tells his parents about a medication that may be his last chance, but emphasizes that severe side effects are expected. Which antifungal has this profile?
A) micafungin B) amphotericin B C) fluconazole D) nystatin