How do white blood cells defend against invading pathogens?
They can engulf and ingest pathogens; this is essentially the white blood 'eats' the pathogen. They secrete (release) antitoxins which counteract the toxins released by pathogens. The toxins they release are often what make us feel ill. The last element of their defence is releasing antibodies which 'attack' and bind the pathogen to stop it binding to cells and help to kill the pathogen.
EM
Related Biology GCSE answers
All answers ▸What is active transport the movement of and what does it need to occur? Give some examples of where is might occur in the human body.
Can you explain the circulatory system of the blood?
What is the role of mRNA in protein synthesis?
What is the difference between the two main schools of thought on enzyme function?