Bicycle Valve Stem Types. There are three types of bicycle valve stems in use: Schrader, Presta and Woods/Dunlop. The Woods or Dunlop valve stem style is much more rare than the other two. Any wheel rim that fits a Schrader valve can also fit a Woods or Presta valve.
Papilloma and Papillomatosis. A papilloma is a benign growth found in breast ducts, which has âfinger-likeâ fronds, and often completely blocks the duct. Papillomas are composed of âmammary epitheliumâ which are the cells that comprise the duct-wall linings of the breast.
The term papilla (plural: papillae) generally means a nipple-like structure, and may refer to:1  Mammary papilla, or nipple. 2  Amphibian papilla and basal papilla, part of the inner ear of the frog. 3  Interdental papilla, part of the gingiva between teeth. 4  Dental papilla, cells involved in a developing tooth.he term papilla (plural: papillae) generally means a nipple-like structure, and may refer to: 1  Mammary papilla, or nipple. 2  Amphibian papilla and basal papilla, part of the inner ear of the frog. 3  Interdental papilla, part of the gingiva between teeth. 4  Dental papilla, cells involved in a developing tooth.