The cells involved in defence against pathogens are

Options :
  1. phagocytes
  2. T - lymphocytes
  3. B - lymphocytes
  4. all the above
Answer and Explanation :-

Answer: Option 4

Explanation:

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He was unheeded, happy, and near to the wild heart of life. He was alone and young and wilful and wildhearted, alone amid a waste of wild air and brackish waters and the seaharvest of shells and tangle and veiled grey sunlight.
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