Which blood cell type has a percentage range of 2 - 4% in normal blood counts?

The correct answer is that eosinophils typically make up about 2 - 4% of the total white blood cell count in a healthy individual. Eosinophils are a type of granulocyte and are primarily involved in the body’s immune response, particularly in the context of allergic reactions and parasitic infections. Their percentage can vary based on different factors such as the presence of allergens or certain infections, but in normal circumstances, this percentage falls within the stated range.

Monocytes, on the other hand, usually account for a larger percentage, making up about 2 - 8% of the white blood cell count. They play a role in the immune response by differentiating into macrophages and dendritic cells.

Basophils are the least common type of granulocyte, typically comprising less than 1% of the white blood cell count. They are involved in inflammatory responses and allergic reactions, particularly those that involve histamine release.

Lymphocytes make up a more substantial portion of the white blood cells, normally falling within the range of 20 - 40%. They are essential for the adaptive immune response, with T cells and B cells being key players in recognizing and eliminating pathogens.

Understanding these ranges is crucial for interpreting complete blood