____________________ are present on the surface of cells that identify the cell as either "self" or "foreign" and allow the body to attack and destroy non-self invaders
a. Antigens
b. Antibodies
c. Platelets
d. Erythrocytes
a
Rationale: a. Correct.
b. Antibodies are produced by beta cells as a defense against invading pathogens.
c. Platelets are involved in the blood clotting process known as hemostasis.
d. Erythrocytes carry oxygen from the lungs to body tissues.
Health Professions
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