Tervo T, Tarkkanen A, Tervo K
Ophthalmic Res. 1985;17(2):111-4. doi: 10.1159/000265360.
Nerve fibers displaying substance P-like immunoreactivity (SPLI) were demonstrated in a whole human iris-ciliary body preparation using immunofluorescence technique. The SPLI nerves were mainly to be located in the posterior iris stroma beneath the pupillary sphincter muscle.