• mammals
  • Preferential inactivation of the paternal X-chromosome occurs in both marsupials and in cell lineages that form the membranes surrounding the embryo, whereas in placental mammals either the maternally or the paternally derived X-chromosome may be inactivated in different cell lines. (wikipedia.org)
  • occur
  • Changes in the integrity and health of the oral mucous membrane can occur as a characteristic of such medical disorders as periodontal disease, uncontrolled diabetes mellitus, oral cancer, and infection with herpes. (thefreedictionary.com)
  • shell
  • Together these form a double membrane, which functions to remove carbon dioxide and to replenish oxygen through the porous shell. (wikipedia.org)
  • layers
  • It comprises two layers, the basal lamina and the reticular lamina , and is composed of Type IV collagen (which is unique to basement membranes), laminin, fibronectin, and heparan sulfate proteoglycans. (thefreedictionary.com)
  • generally
  • membranes peripheral to the macula are generally asymptomatic, while those involving the macula or adjacent to it may cause reduction in vision, visual distortion, and diplopia. (thefreedictionary.com)
  • made
  • hemodialyzer membrane the semipermeable membrane that filters the blood in a hemodialyzer , commonly made of cuprophane, cellulose acetate, polyacrylonitrile, polymethyl methacrylate, or polysulfone. (thefreedictionary.com)
  • The eggshell is mostly made up of calcium carbonate and the membrane is valuable protein. (wikipedia.org)