| biologicals |
Vaccines, cultures and other preparations made from living organisms and their products, intended for use in diagnosing, immunizing, or treating humans or animals, or in related research.
Ãâó: www.nsc.org/ehc/glossary.htm
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| biological indicator |
an organism whose presence is an indication of the health of its ecosystem
Ãâó: www.kentuckyawake.org/templates/glossary/
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| biological half-life |
The term which is used for the time required for the amount of a particular substance in a biological system to be reduced to one half of its value by biological processes when the rate of removal is approximately exponential. Substances with a long biological half-life will tend to accumulate in the body and are, therefore, particularly to be avoided. Substances with a short biological half-life may accumulate if some becomes tightly bound, even if most is cleared from the body rapidly. ...
Ãâó: www.bio.hw.ac.uk/edintox/glossall.htm
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| biological chemistry |
Two terms (and two Michigan programs) for essentially the same thing: using chemistry techniques to understand and manipulate the molecules in living systems.
Ãâó: www.med.umich.edu/genetics/glossary/
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| biological clock |
An intrinsic biological mechanism responsible for the periodicity or other time-dependant aspects of certain classes of behavior and living organisms
Ãâó: www.sleepcompliance.com/html/glossary.htm
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