Cytoprotection is defined as an ability of pharmacologic agents, originally PGs, to prevent gastric and intestinal mucosal injury produced by a variety of ulcerogenic agents (eg, aspirin, indomethacin, bile acids) and by necrotizing agents (eg, boiling water, absolute alcohol, 0.6 mol/L HCl, 0.2 mol/L NaOH).
Definition of systematic error. : an error that is not determined by chance but is introduced by an inaccuracy (as of observation or measurement) inherent in the system.
Systematicor determinate errors affect accuracy! Precision â agreement between 2 or more measurements of the sample made in exactly the same way Randomor indeterminate errors affect precision! 27 Mean: Average or arithmetic mean Median: arrange results in increasing or decreasing order Precision: S, RSD, Cv Accuracy: Error, Relative Error 28 Absolute error (E) â diff. between true and measured value E = xi â xt where xi = experimental value, xt = true value Ex.