passages.id: split_4_test_1982_passage
passages.type: progene_text
passages.text: Intravesical administration of 0.4 % sodium hyaluronate for 30 minutes in 6 rats before stress reduced mean bladder mast cell activation by 69.7 % to 23.1 % +/- 6.1 % compared with stressed controls ( p = 0.0003 ) .