Test Bank For Advances in Clinical Cytometry, An Issue of the Clinics in Laboratory Medicine, 1st Edition Editor Christopher B. Hergott.

Chapter 13. Advances in Clinical Mass Cytometry What is the primary advantage of mass cytometry over traditional flow cytometry? A. Higher throughput B. Ability to analyze more parameters simultaneously C. Simplicity of the technique D. Lower cost per sample Correct Answer: B. Ability to analyze more parameters simultaneously Rationale: Mass cytometry uses metal-tagged antibodies, allowing the simultaneous detection of over 40 parameters, which significantly surpasses the limitations found in traditional flow cytometry. In mass cytometry, what do the metal isotopes serve as? A. Fluorochromes for signal detection B. Imaging agents C. Tags for specific antibodies D. Cell fixation agents Correct Answer: C. Tags for specific antibodies Rationale: Metal isotopes are attached to antibodies and serve as the identifiers in mass cytometry, enabling the detection of multiple cellular characteristics at once. Which of the following can be analyzed using mass cytometry? A. Cellular surface markers B. Intracellular proteins C. Phosphorylation states D. All of the above Correct Answer: D. All of the above Rationale: Mass cytometry can analyze a wide variety of cellular markers, including surface markers, intracellular proteins, and phosphorylation states, due to its ability to measure multiple parameters simultaneously. What technological advancement allows mass cytometry to detect a large number of parameters? A. Laser technology B. Custom antibodies C. Inductively coupled plasma mass spectrometry (ICP-MS) D. Microfluidics Correct Answer: C. Inductively coupled plasma mass spectrometry (ICP-MS) Rationale: Mass cytometry utilizes ICP-MS technology, which enables the detection of numerous metal isotopes simultaneously, resulting in high-dimensional data collection. Mass cytometry is particularly useful in which of the following fields? A. Microbiology B. Immunology C. Hematology D. All of the above Correct Answer: D. All of the above Rationale: Mass cytometry is beneficial across various fields, particularly in immunology and hematology, where characterizing cell populations and their states is crucial. Which of the following is a limitation of mass cytometry? A. High cost of equipment B. Low specificity C. Inability to measure rare cell populations D. Complex data analysis Correct Answer: A. High cost of equipment Rationale: While mass cytometry delivers high-dimensional data, the cost of mass cytometers is relatively high, which can limit accessibility in some laboratories. What is a common application of mass cytometry in clinical settings? A. Diagnosis of viral infections B. Cancer immunophenotyping C. Bacterial identification D. Routine hematology tests Correct Answer: B. Cancer immunophenotyping Rationale: Mass cytometry is particularly useful in cancer immunophenotyping, where understanding the immune landscape of tumors is critical for diagnosis and therapy planning. Select all that apply: What are some common challenges faced during mass cytometry data analysis? A. Sample overloading B. High-dimensional data interpretation C. Inconsistent antibody performance D. Low throughput Correct Answers: B, C Rationale: High-dimensional data interpretation can be complex, and inconsistent performance of antibodies can lead to challenges in reproducibility, while sample overloading is more relevant in flow cytometry than mass cytometry. Which of the following is a key feature of mass cytometry that differentiates it from flow cytometry? A. The use of lasers for detection B. Direct analysis of live cells C. Measurement of metal isotopes D. Ability to analyze single-cell RNA Correct Answer: C. Measurement of metal isotopes Rationale: Mass cytometry’s ability to measure metal isotopes sets it apart, allowing for the simultaneous assessment of numerous parameters without spectral overlap. Why is it important to validate antibody specificity in mass cytometry? A. To reduce costs B. To ensure accurate data interpretation C. To increase sample throughput D. To improve laboratory workflow Correct Answer: B. To ensure accurate data interpretation Rationale: Validating antibody specificity is crucial in mass cytometry to confirm that the detected signals correspond to the intended targets, which directly affects data accuracy. In a mass cytometry experiment, what phenomenon can affect data quality if not properly controlled? A. Batch effects B. Cell viability C. Signal saturation D. All of the above Correct Answer: D. All of the above Rationale: All listed factors, including batch effects, cell viability, and signal saturation, can significantly impact data quality in mass cytometry and must be carefully controlled. How does mass cytometry handle issues of spectral overlap? A. By using fluorescent dyes B. By applying specific gating strategies C. By utilizing mass instead of wavelength for detection D. By conducting multiple assays Correct Answer: C. By utilizing mass instead of wavelength for detection Rationale: Mass cytometry circumvents the problem of spectral overlap by measuring mass instead of light wavelength, allowing for the assessment of many markers without interference.