- 行业: Agriculture
- Number of terms: 87409
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- Company Profile:
Established in October 1945 with the objective of eliminating hunger and improving nutrition and standards of living by increasing agricultural productivity, FAO coordinates the efforts of governments and technical agencies in programs for developing agriculture, forestry, fisheries, and land and ...
Baculoviruses are a class of insect virus which have been used to make DNA cloning vectors for gene expression in eukaryotic cells. Baculoviruses have a gene which is expressed at very high levels late in their infection cycle, filling the nucleus of the cell with many-sided bodies full of a protein which is not needed to produce more viruses, but is necessary for the virus's spread in the wild. In a vector cloning system, this gene is replaced by one that the biotechnologist wants expressed. Production of the protein can be up to 50% of the cells' protein content, and several proteins can be made simultaneously, so that multi-sub-unit enzymes can be made by this system. Being an animal expression system, baculoviruses produce proteins that are glycosylated (addition of carbohydrates) like the proteins in animals, making it an attractive option for the production of biopharmaceuticals. In addition, baculoviruses are non-infective and non-pathogenic to vertebrates.
Industry:Biotechnology
Between two different species, e.g., an interspecific cross is a cross between two species.
Industry:Biotechnology
Biopharmaceutical proteins formed as a result of fusion proteins. Their advantages are:
- synergistic activities in one molecule; thus when the molecule binds to a cell, it does two things at once;
- the adverse effect or poor stability of one molecule may be offset by the properties of the other; and
- one molecule acts as a targeting mechanism to bring the other to the site where it is meant to act.
Industry:Biotechnology
Bioreactor dependent on sunlight, which is taken up by its content of plant material, usually algae.
Industry:Biotechnology
Bioreactors where cells grow on or behind a permeable membrane, which lets the nutrients for the cell through but retains the cells themselves. A variations on this theme is the hollow-fibre reactor.
Industry:Biotechnology
Blood globulin that reduces the clotting time of haemophilic blood.
Industry:Biotechnology
Body produced by fusion of the heterochromatic regions of the chromosomes in the polytene tissues (e.g., the salivary glands) of certain <i>Diptera</i>.
Industry:Biotechnology
Botanically, a seed is the matured ovule without accessory parts. Colloquially, a seed is anything which may be sown; i.e., seed potatoes (which are vegetative tubers); seed of corn, sunflower, etc.
Industry:Biotechnology
Botany: Eventual extinction of a natural species as massive pollen flow occurs from another related species and the natural species becomes more like the related species.
Industry:Biotechnology
Cabinet for inoculation of cultures. The working area is kept sterile by a continuous, non-turbulent flow of sterilized air through a HEPA filter.
Industry:Biotechnology
