Respuesta :
I believe the answer is "pathogens".
"White blood cells protect against pathogens and aid in blood clotting when injuries are sustained."
Ans.
White blood cells (WBCs) or leukocytes are immune cells that are associated with protection of body against foreign invaders (pathogens) and infectious diseases. These cells include neutrophils, eosinophils, basophils, B cells, T cell, and NK cells.
These cells migrate to the site of injury to prevent infection and entry of pathogens from broken skin. The B cells generate specific antibodies for particular pathogens and help in killing pathogens with the help of other immune cells, such as T cells.
Thus, the correct word to be filled in the blank is 'pathogen.'
