Part of the biochemical reaction arrow series.
<a href="//commons.wikimedia.org/wiki/User:GKFX" title="User:GKFX">GKFX</a><sup><a href="//commons.wikimedia.org/wiki/User_talk:GKFX" title="User talk:GKFX">talk</a></sup>, based on work by <a href="//commons.wikimedia.org/wiki/User:Medium69" title="User:Medium69">User:Medium69</a>.
Modification of <a href="//commons.wikimedia.org/wiki/File:Biochem_reaction_arrow_reversible_NNNN_horiz_med.svg" title="File:Biochem reaction arrow reversible NNNN horiz med.svg">File:Biochem reaction arrow reversible NNNN horiz med.svg</a>