passages.id: split_4_test_1986_passage
passages.type: progene_text
passages.text: Pretreatment with 0.4 % sodium hyaluronate reduced mean rat mast cell protease-I 80.8 % compared with stressed controls ( p = 0.008 ) and prevented any increase in response to stress in the same group of 8 rats with a mean pre - stress and post - stress level of 0.09 +/- 0.04 and 0.1 +/- 0.04 ng. , respectively ( p = 0.8 ) .