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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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In which of the following conditions Downey cells can be seen ?
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The correct answer is  Atypical lymphocytes also known as Downey cells after Hal Downey, who contributed to the characterization of it. These are lymphocytes that become large due to antigen stimulation. The nucleus could be elliptic, round, indented, cleft or folded and it may contain nucleolus ,with abundant cytoplasm which is basophilic Vacuoles and/or azurophilic granules can also be present. It is associated with EBV or CMV .