PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3295183-13 1987 We report that periodontal ligament (PDL) cells migrate towards FN and ECGF; that PDL cell migration is enhanced when dentin is preconditioned with tetracycline HCl; that PDL cells have an increased proliferative response when dentin is conditioned with both FN and ECGF; that gingival epithelial cells have increased migratory and proliferative responses when LM is used to condition dentin; and that there is a reciprocal utilization of biological response modifiers by gingival epithelial cells and PDL cells. Tetracycline 148-164 fibroblast growth factor 1 Homo sapiens 266-270