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 a decline in oxygen levels to trace amounts, <0.1%.
Comment:
Note that this term should not be confused with 'cellular response to hypoxia ; GO:0071456'.
Synonyms:
exact_synonym:
cellular response to anaerobic conditions; cellular response to anoxic stress