What is dn in valves?

Where are monoploid cells are produced? Can Dermatix ultra be used for stretch marks? How many lbs of pressure does it take to crush a jawbreaker? Can cod liver oil induce you when you are pregnant? What diseases affect the hip? Does the chain of infection have to be continuous for an infection to occur? Can you take paracetamol if you have acid reflux? Is schederma cream used for treating ringworm? How many weeks is 90 days? Is a tick a organism? What did the black death do for the serfs? You have had a dry sore throat for going on day 3 and you noticed a white spot on your right tonsil so any ideas what it is and should you go to doctors? What is the sound coming through mouth after eating full stomach called? What does cerebral humor mean? Do blood vessels constrict or expand when a person overheats? Where are the nuclei of the cranial nerves V VI and VII found? Uncontrolled muscle contractions the same as skeletal muscle contractions? Diseases that cant harm people? Can you be pregnant if im on the pill but had diarrahea? Where does Bile it act in the digestive system?