More astonishing than the difference between the length of the lists of Old World's and New World's domesticated animals is the difference between the lengths of the lists of infectious diseases native to the two.
Fetal Hemoglobin Test. Definition. Fetal hemoglobin (Hemoglobin F), Alkali-resistant hemoglobin, HBF (or Hb F), is the major hemoglobin component in the bloodstream of the fetus. After birth, it decreases rapidly until only traces are found in normal children and adults. Purpose.
noun. The definition of an alkali is a soluble salt that comes from the ashes of plants and is made up of mostly potassium or sodium carbonate. Lye and calcium carbonate are each an example of an alkali.he definition of an alkali is a soluble salt that comes from the ashes of plants and is made up of mostly potassium or sodium carbonate.