passages.id: split_4_test_1751_passage
passages.type: progene_text
passages.text: Activation of peripheral blood mononuclear cells ( PBMC ) with a mixture of phorbol myristate acetate ( PMA ) and ionomycin or lipopolysaccharide ( LPS ) for 4 h was used to assess the distribution of interleukin-2 ( IL-2 ) - secreting or interferon-gamma ( IFN-gamma ) - secreting CD4 ( + ) and CD8 ( + ) cells , as well as IL-1alpha - secreting CD14 ( + ) cells .