An open - sprung mattress contains one long piece of wire coiled into springs. (idealhome.co.uk)
«Since basal wire coiling in this experiment markedly suppressed root growth, presumably by impeding photosynthate translocation through the phloem to the roots, we assume that water absorption was also decreased by this treatment,» Takahata and Miura wrote. (sciencedaily.com)
Copper wire coiled around the device produces an inflammatory reaction that is toxic to sperm and eggs (ova), preventing pregnancy. (mayoclinic.org)