Veldig interessant studie som nevner at pH-sanse nerveceller(ASIC) finnes i Merkel og Ruffini celler i huden, og at i ASIC knockout mus så reagerer de ikke på trykk.

http://www.ncbi.nlm.nih.gov/pubmed/23490035

The ASIC proteins are involved in neurosensory mechanotransduction in mammals. The ASIC isoforms are expressed in Merkel cell-neurite complexes, periodontal Ruffini endings and specialized nerve terminals of skin and muscle spindles, so they might participate in mechanosensation.

In knockout mouse models, lacking an ASIC isoform produces defects in neurosensory mechanotransduction of tissue such as skin, stomach, colon, aortic arch, venoatrial junction and cochlea. The ASICs are thus implicated in touch, pain, digestive function, baroreception, blood volume control and hearing.