Cimetidine reduces RANKL/OPG ratio and IL-6 immunoexpression in the gingival lamina propria of rat molars with induced periodontal disease - Oliveira, P. A. de; Longhini, R.; Sasso-Cerri, E. [UNESP]; Cerri, P. S. [UNESP] (Amer Soc Cell Biology, 2013)