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The cell with a rounded or slightly indented nucleus that almost completely fills the cell is the mature

a. monocyte.
b. eosinophil.
c. lymphocyte.
d. neutrophil.

1 Answer

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Final answer:

The cell described as having a rounded or slightly indented nucleus filling most of the cell is the mature lymphocyte, responsible for the adaptive immune response.

Step-by-step explanation:

The cell with a rounded or slightly indented nucleus that almost completely fills the cell is the mature lymphocyte. Lymphocytes are agranulocytes, including B and T cells, which are responsible for the adaptive immune response. Unlike granulocytes such as neutrophils, eosinophils, and basophils which have a lobed nucleus and granular inclusions, lymphocytes have a large, often rounded nucleus with little cytoplasm, distinguishing them from other white blood cell types.

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