What is normal Ki67 in lymph node cells?

Ki67 is a protein associated with cell proliferation, and its expression levels can vary depending on the type of tissue and the context of the disease. In normal lymph node cells, Ki67 positivity is typically low, usually ranging from 1% to 10% of the cells, as these cells are generally in a quiescent state. However, during immune responses, such as infections, Ki67 expression can increase as lymphocytes proliferate. The interpretation of Ki67 levels should be contextualized within the overall clinical picture.