BioScience Dictionary

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Found I.v. 16 times.

Displaying results 1 to 10.

1. I.v.
This is the abbreviation for intravenous (used in relation to administration of drugs or other substances).

2. IMVIC tests
A group of four biochemical tests used to look for the presence of bacteria of the family Enterobacteriaceae in a sample. The tests used are indole, methyl red, Voges-Proskauer, and citrate.

3. Invasive
* Describes a medical or surgical procedure which requires the skin to be cut open and/or objects to be inserted into the body. * Describes a species which takes over a new habitat where it was not previously found, often to the detriment of species which were there before. * Describes a microbe which is able to enter the body of a host organism and move about inside at will. The microbe may or may not cause any diseases. * Describes a cancerous tumor which is able to destroy surrounding healthy tissue and expand into the area where the healthy tissue was.

4. Invasive species
Non-native species disrupting and replacing native species.

5. Invasiveness
Degree to which an organism is able to spread through the body from a focus of infection.

6. Inverse density dependence
A situation where an environmental factor which affects population density inversely changes when the population density changes, such that an increase in population density will cause the population to grow better, while a decrease in population density will cause the population to not grow as well. Generally the environmental factor affects birth and death rates to cause this to occur.

7. Inversion
A type of chromosomal mutation where the nucleotide sequences within a segment of DNA are in reverse order than normal, as if that piece of DNA had been removed, turned over, and put back.

8. Inversion
A reversal in the order of genes on a chromosome segment.

9. Invert (thalweg)
The bottom (at its deepest point) of any streambed or channel, natural or manmade (i.e., the bottom of any culvert, etc.). In a natural stream the term "thalweg" is generally used.

10. Invertebrate
Generally, any animal that does not have a spine (vertebrae). Specifically, any animal which is not taxonomically classified within phylum Chordata and subphylum Vertebrata.

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