What kind of cell kills invading bacteria?

Answer 1

B-cells and T-cells can both kill the invading bacteria.

B-cells:- create antibodies which kill the bacteria.

T-cells:-attack them directly or call in white blood cells. The T-cells also remember the T-cells also remember the type of bacteria and then protect themselves from that bacteria invading again.

I hope this answered your question, and helped you out. :)

Answer 2

White Blood Cells are responsible for fighting pathogens in your body.