When a parasite enters the body, basophils in the blood stream or mast cells found in other tissues release chemical signals. These signals attract to the site of the infection. *

Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Which type of scientific statement is defined as a hypothesis or group of hypotheses that can be accepted as true based on the repeated experimentation with similar results