Earwax in the canal. Jaw movement assists this process by dislodging debris attached to the walls of the ear canal, increasing the likelihood of its expulsion. The lubrication provided by cerumen prevents desiccation of the skin within the ear canal. The lubricative properties arise from the high lipid content of the sebum produced by the sebaceous glands. In wet-type cerumen, these lipids include cholesterol, squalene, and many long-chain fatty acids and alcohols. While studies conducted up until the 1960s found little evidence supporting antibacterial activity for cerumen, more recent studies have found that cerumen has a bactericidal effect on some strains
Substance 1987 singles compilation by New Order's predecessor band Joy Division, also entitled "Substance (Joy Division album)". While "Substance" presents a sizeable collection of singles, there are many omissions and differences to be found from the original single releases: The standard tape version, due to the extra space befitting the format, also contains extra tracks in the form of "Dub-vulture", "Shellcock", and "Bizarre Dub Triangle", as well as the actual "Mesh" (mislabeled "Cries and Whispers", again identically to the "Everything's Gone Green" sleeve). Only on the limited edition cassette version does "True Dub" appear, as the last track on the second tape.