Diapedesis refers to
- the type of movement erythrocytes use in the tissue spaces.
- the escape of leukocytes from blood vessels into tissue spaces.
- the secretion of chemicals that trigger the inflammatory process.
- the chemical attraction leukocytes use to reach the site of tissue damage.
- the engulfing of foreign bodies by leukocytes.
Answer: the escape of leukocytes from blood vessels into tissue spaces.