cell-attachment determinant
21Healing of periapical lesions — Apical periodontitis is typically the body’s defense response to the threat of microbial invasion from the root canal. [Lopez Marcos, JF. Aetiology, classification and pathogenesis of pulp and periapical disease, Med Oral Patol Oral Cir Bucal… …
22Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… …
23Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
