TY JOUR TI HEMATOSALIVAL BARRIER IN CLINICAL PRACTICE KW blood-fluid barrier KW oral fluid KW homeostasis KW pathogenesis KW diagnosis JO Actual problems in dentistry AU Chuykin, O.S. AU Shtanko, M.I. AU Kuchuk, K.N. PY 2021 IS 17 PB TIRAZH Publishing House