What name the chemical which prevent blood from clotting?

Why might the drop in hiv infection rates be misleading? Does sweating lower blood pressure? Is the brain the biggest organ in the body? Is Peyton R List on the justice size chart? Can a whooping cough be trated by antibiotics? Is the common cold an active or inactive virus? Why did whitefield's movement affected so many people? Mallory weiss tear is common in greater or lesser curvature of stomach? Is CPR 50 years old? Which two endocrine organs are directly related to the reproductive system? I get my period regular everymonth and now 2 weeks later it is back but it is light? Fasting and PP sugar range for healthy mid age male? Show a chart of safe period to avoid pregnancy? What phobia is the fear of loneliness? Your due date is August 25 when did you conceive? Where are platelets found? The lens in your eye is the same shape as a convex lens What would you notice about the image formed at the back of the eye? Why does my smegma smell like old milk? Can stress cause migraines puking the shakes and other flu like symptoms? 5) A patient presents to the hospital. He has been feeling ill since his return from safari in Africa a few days ago. He exhibits symptoms of fever mild hypotension flushing conjunctival injection and?