passages.id: split_8_test_2130_passage
passages.type: progene_text
passages.text: Granulysin has been identified as an effector molecule co - localized with perforin in the cytotoxic granules of cytotoxic T lymphocytes and natural killer ( NK ) cells , and has been reported to kill intracellular pathogens in infected cells in the presence of perforin and to induce a cytotoxic effect against tumor cells .