Most people know that 28.35 grams is 1 Ounce, but that is the avoirdupois Ounce, the common method to weigh groceries etc. When you are weighing precious metals or stones, jewellers use another method called Troy in which 31.103 grams is 1 Troy Ounce.So remember:ost people know that 28.35 grams is 1 Ounce, but that is the avoirdupois Ounce, the common method to weigh groceries etc. When you are weighing precious metals or stones, jewellers use another method called Troy in which 31.103 grams is 1 Troy Ounce. So remember:
Used For: mtDNA tests can be used to test your direct maternal lineage - your mother, your mother's mother, your mother's mother's mother, etc. mtDNA mutates much more slowly than Y-DNA, so it is really only useful for determining distant maternal ancestry. Available To: Everyone.
ELISA, or EIA, is an acronym for enzyme-linked immuno assay. ELISA is a test that detects and measures antibodies in your blood.This test can be used to determine if you have antibodies that are related to certain infectious conditions.Antibodies are proteins that the body produces in response to harmful substances (antigens).An ELISA test may be used to diagnose: 1  HIV (the virus that causes AIDS). 2  Lyme disease.his test can be used to determine if you have antibodies that are related to certain infectious conditions. Antibodies are proteins that the body produces in response to harmful substances (antigens). An ELISA test may be used to diagnose: 1  HIV (the virus that causes AIDS). 2  Lyme disease.