The protein which prevents coagulation of blood in the blood vessel is

Antibodies are produced by

Which organs are responsible for filtering out destroyed red blood cells?

When whole blood is stored with an anticoagulant at $4^{\circ}C$,the $K^+$ ions move out from the $RBC$ into the plasma. The most likely reason for this is that

Which of the following is found in the highest concentration in blood plasma?

Which of the following are agranulocytes?