. "\"Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.\" [GOC:mah]" . . "cellular response to hypoxia" . "cellular response to hypoxic stress" . "cellular response to lowered oxygen tension" . "Note that this term should not be confused with 'cellular response to anoxia ; GO:0071454'. Note that in laboratory studies, hypoxia is typically studied at O2 concentrations ranging from 0.1 - 5%." . . . .