PT - JOURNAL ARTICLE AU - Alex L. Shigo TI - Tree Health AID - 10.48044/jauf.1982.071 DP - 1982 Dec 01 TA - Arboriculture & Urban Forestry (AUF) PG - 311--316 VI - 8 IP - 12 4099 - http://auf.isa-arbor.com/content/8/12/311.short 4100 - http://auf.isa-arbor.com/content/8/12/311.full AB - A nontechnical discussion for the arborist on what a tree is and how it responds after injury and infection. The more we know about trees, the more we can help them help themselves after injury and infection.