When germs enter the blood stream, they are soon engulfed by ______________.

Keep practicing — related questions

• _________ in the blood fight(s) against the germs entering the body.
• The human body is protected from invading bacteria by ________.
• Blood circulates around the body through ____.
• On the basis of _______ present on the surface of red blood cells, four blood groups are formed.
• The process in which the WBCs squeeze through the walls of the capillaries into the tissue spaces is ______...
• Germs can _________very quickly from person to person making them sick.
• The immune cells present in the lymphatic system to protect our body from foreign particles are called ____...
• Small food particles travel from here into the blood.