Blood cells that function to fight infection are called .

Providing immunity by injecting the body with a weakened form a pathogen is known as

Kidney stones are tiny crystals of calcium or magnesium that block the narrow sections of the excretory system. which symptoms would a person with kidney stones experience? a. inability to store urine; pain in the bladder b. inability to store urine; pain in the urethra c. reduced urine flow; pain in the bladder d. reduced urine flow; pain in the urethra

How is the expression of surface antigens on red blood cells determined?