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.
Definition of Human Papillomavirus (HPV) Human Papillomavirus, or HPV, encompasses a group of over 150 virus types. Many HPV strains are symptomless, while some strains cause genital warts, and a few can lead to cervical cancer. HPV is the most common sexually transmitted diseases; there are over 3 million cases in the United States each year.