passages.id: split_5_test_3266_passage
passages.type: progene_text
passages.text: In mineralising MG63 cells a 62 - fold increase in hyaluronidase 2 , a 13 - fold increase in hyaluronidase 3 , and a 3 - fold increase in hyaluronidase 4 expression were observed when compared to non - mineralising cells ; hyaluronidase 1 and PH20 expression was not detected .