Platelets are derived from what parent cell?

Lymphocytes (natural killer cells, T helper cells, and B cells) make up what percentage of white blood cells?

What is the role of macrophages in the immune response?

The process by which white blood cells move into and out of blood vessels is __________.

Monocytes make up what percent of the average white blood cell count?

The most common free plasma proteins include all of the following except __________.

Eosinophils make up what percent of the average white blood cell count?

Neutrophils make up what percent of white blood cells in the blood?

All of the following white blood cells are granulocytes except __________.

Which of the following blood cells is anucleate (lacking a nucleus)?