Natural history -- Victoria -- Ash Range : Secrets of the forest : discovering history in Melbourne's Ash Range / Tom Griffiths ; with assistance from the Historic Palaces Branch, Department of Conservation and Environment, Victoria and the Monash Public History Group
Natural history -- Victoria, Western : Settlement of the Western district, from prehistoric times to the present : proceedings of a public lecture series held in Warrnambool, 3 November 1984 / edited by J. Sherwood, J. Critchett and K. O'Toole
Natural history -- Wales -- Pre-Linnean works : Enlightenment travel and British identities : Thomas Pennant's tours of Scotland and Wales / edited by Mary-Ann Constantine and Nigel Leask
Natural history -- West Virginia -- Blackwater River : The Blackwater chronicle : a narrative of an expedition into the land of Canaan in Randolph County, Virginia : a country flowing with wild animals, such as panthers, bears, wolves, elk, deer, otter, badger, &c., &c., with innumberable trout / by five adventurous gentleman, with any aid of government, and solely by their own resources, in the summer of 1851 ; by Philip Pendleton Kennedy ; illustrated by David Hunter Strother ; edited and with a preface by Timothy Sweet
2002
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Natural history -- West Virginia -- Canaan Valley : The Blackwater chronicle : a narrative of an expedition into the land of Canaan in Randolph County, Virginia : a country flowing with wild animals, such as panthers, bears, wolves, elk, deer, otter, badger, &c., &c., with innumberable trout / by five adventurous gentleman, with any aid of government, and solely by their own resources, in the summer of 1851 ; by Philip Pendleton Kennedy ; illustrated by David Hunter Strother ; edited and with a preface by Timothy Sweet
The capacity of a normal organism to remain unaffected by microorganisms and their toxins. It results from the presence of naturally occurring ANTI-INFECTIVE AGENTS, constitutional factors such as BODY TEMPERATURE and immediate acting immune cells such as NATURAL KILLER CELLS
Bone marrow-derived lymphocytes that possess cytotoxic properties, classically directed against transformed and virus-infected cells. Unlike T CELLS; and B CELLS; NK CELLS are not antigen specific. The cytotoxicity of natural killer cells is determined by the collective signaling of an array of inhibitory and stimulatory CELL SURFACE RECEPTORS. A subset of T-LYMPHOCYTES referred to as NATURAL KILLER T CELLS shares some of the properties of this cell type