Thus the stoichiometry of the transported solutes is 1Na:1K:2Cl. However, there is a notable exception in squid giant axon as the symporter in this special cell has a stoichiometry of 2Na:1K:3Cl, although electroneutrality is still maintained.
The stoichiometry of solutes transported by a symporter is 1Na:1K:2Cl for most cells but 2Na:1K:3Cl in squid giant axons, despite electroneutrality being maintained.