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A 6-year-old boy has difficulty rising from the floor withou…

A 6-year-old boy has difficulty rising from the floor without using his hands and walks with a waddling gait. What is the most likely underlying condition? 

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A 50-year-old male is undergoing chemotherapy that targets r…

A 50-year-old male is undergoing chemotherapy that targets rapidly dividing cells by disrupting DNA replication.  Which phase of the cell cycle is primarily affected by this treatment? 

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Which cytokines are commonly produced by Th1 cells to promot…

Which cytokines are commonly produced by Th1 cells to promote cell-mediated immunity? 

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A 45-year-old male with melanoma is found to have high level…

A 45-year-old male with melanoma is found to have high levels of PD-L1 expression on tumor cells.  How does PD-L1 expression contribute to cancer progression? 

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A patient receives a vaccine that induces a strong Tfh cell…

A patient receives a vaccine that induces a strong Tfh cell response. What is the expected outcome of this response? 

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A 40-year-old female with a history of radiation exposure pr…

A 40-year-old female with a history of radiation exposure presents with a tumor. Her cells show an inability to arrest the cell cycle in response to DNA damage.  Which checkpoint is most likely defective in her cells? 

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How do oncogenes contribute to cancer development? 

How do oncogenes contribute to cancer development? 

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A patient with a compromised thymus gland is likely to have…

A patient with a compromised thymus gland is likely to have deficiencies in which type of immune cells? 

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How can cancer-causing viruses contribute to cancer developm…

How can cancer-causing viruses contribute to cancer development? 

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A patient suffers a cut on their arm, leading to tissue inju…

A patient suffers a cut on their arm, leading to tissue injury. Which cells are first to respond to this injury? 

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