Lability refers to something that's constantly undergoing change or something that's likely to undergo change. Biochemically this is an important concept as far as kinetics is concerned in metalloproteins. This can allow for the rapid synthesis and degradation of substrates in biological systems. Biologically, labile cells refers to cells that constantly divide by entering and remaining in the cell cycle. An important example of this is in the epithelium of the cornea, where cells divide at the… (More on Lability)