210. in vivo Experiments or processes performed or taking place in living organisms.
211. in silico Experiments performed on a computer for the purpose of the evaluation or prediction of in vivo results, or for the optimization of conditions to be used for planned experiments. Some important in silico analyses may include simulating a biologic or biochemical process, testing a predictive model under a specific set of computational parameters or performing database searches.
212. in situ An action, process, observation or analysis that takes place in the natural, original position or location. In pharmacological studies of biological systems, in situ processes usually take place in an organism and/or organ at the specific site where a disease process or drug action is exerted.
213. inaccuracy Numerical difference (positive or negative bias) between the mean of a set of replicate measurements and the true or nominal value.
