What cells may demonstrate a coarse block pattern of activity with the PAS stain?
a. Normal lymphocytes
b. mature neutrophils
c. Normal erythroid precursors
d. Malignant lymphoblasts
ANS: D
Malignant lymphoblasts may demonstrate a coarse block pattern of activity with the PAS stain. Normal lymphocytes and erythroid precursors are negative. Mature neutrophils demonstrate diffuse positive activity.
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Answer the following statement(s) true (T) or false (F)
1. A bluish skin color is known as cyanosis. 2. A pink skin color is known as cyanosis. 3. Melanoma can be effectively treated by cryosurgery. 4. Chickenpox vaccine prevents shingles from developing. 5. Herpes simplex type 2 is sexually transmitted.
To avoid cross-contamination from patient to patient, it is recommended that you do the following:
Run the suction lines with an EPA-approved solution at the end of each work day. Clean the dental chair and bracket table between patients. Use a dental dam when there is a potential for generation of aerosol. Use disposable items when possible.
Scatter radiation in radiography is produced during
a. Compton interactions. b. photoelectric effect interactions. c. coherent or classical interactions. d. an annihilation interaction.
What will happen if any of the three contents of the skull increase in size or amount?
A) There is a decrease in intracranial pressure. B) There is a transient decrease, then an increase in pressure. C) Intracranial pressure remains normal. D) There is an increase in intracranial pressure.