Explain how environmental factors contribute to the pathogenesis of lymphoid neoplasms
What will be an ideal response?
Answer: The Epstein-Barr virus infects B lymphocytes, where it remains latent under the immune system's control. The EBV-infected cells can proliferate if the host becomes immunocompromised and/or the B lymphocytes acquire additional genetic abnormalities.
Helicobacter pylori leads to antigen-driven T-lymphocyte stimulation and subsequent B-lymphocyte activation. The B lymphocytes initially are polyclonal and depend entirely on T-cell stimulation. With time, the B-cell population can proliferate autonomously.
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A 10-year-old boy was struck by a car while riding his bike. He has blood on his face and presents as unresponsive with snoring respirations. Respirations are approximately 10 per minute, with cyanosis noted to his extremities. Manual inline spinal stabilization is being held by EMRs. Which one of the following should you do next?
A) Look for life-threatening injuries. B) Perform a jaw-thrust maneuver. C) Suction the airway. D) Administer positive pressure ventilation.
Clinical microbiology is concerned with _____ the organism. 1. identifying 2. controlling 3. isolating 4. eradication of
a. 1 and 4 c. 1, 2, and 4 b. 2 and 3 d. 1, 2, and 3
What does the OSHA Hazard Communication Standard state is the purpose of a product label?
What will be an ideal response?
Which of the following would be an electrochemical principle of operation used by an oxygen analyzer?
A) galvanic B) paramagnetism C) polarographic D) thermoconductivity