Notes that although oral microflora cannot be held solely responsible for the presence or absence of periodontal disease and associated conditions, thesemicroflora do manifest differently in healthy verses diseased tissue. This observation is true both in the species which are present and in what concentrations they are present. Suggests laboratory methodologyfor qualifying and quantifying their presence, as well as linking thatpresence to periodontal disease. Bibliography lists 15 sources. A 6 page overview of the enzyme catalase, its function in both the living organism and as an isolated form in commercial applications.
Bibliography lists four sources.
An 8 page discussion of the events which resulted in the extinction of the dinosaurs. Suggests that a meteoric impact with the earth set in motion a series of environmental events which ultimately translated into dinosaur extinction. Bibliography lists 10 sources.