leukocyte (n.)

• antibody
• antigen
• blood
• bloodmobile
• bloodstream
• circulation
• erythrocyte
• globulin
• gore
• grume
• hematics
• hematologist
• hematology
• hemoglobin
• humor
• ichor
• isoantibody
• lifeblood
• neutrophil
• opsonin
• phagocyte
• plasma
• serum