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. 1. alkali metal-any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium); the hydroxides of the alkali metals are strongly alkaline. alkaline metal.