TY - RPRT TI - Porous bioactive glass and hydroxyapatite ceramic affect bone cell function in vitro along different time lines. AU - A El-Ghannam AU - P Ducheyne AU - I M Shapiro PY - 1997 DO - 10.1002/(sici)1097-4636(199708)36:2<167::aid-jbm5>3.0.co;2-i UR - https://pubmed.ncbi.nlm.nih.gov/9261678/ ID - 9261678 ER -