passages.id: split_8_test_771_passage
passages.type: progene_text
passages.text: In addition , the effects of FL on in vitro expansion of murine haematopoietic stem cells were studied using lineage - negative ( lin ( - ) ) Sca-1 positive ( Sca-1 ( + ) ) c-kit positive ( c-kit ( + ) ) marrow cells from 5-FU treated mice .