- 行业: Agriculture
- Number of terms: 87409
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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 ...
Microfibrils are exceedingly small fibres visible only at the high magnification of the electron microscope.
Industry:Biotechnology
A sensitive technique for accurately determining specific molecules in a mixed sample. The amount of protein or other antigen in a given sample is determined by means of an enzyme-catalysed colour change, avoiding both the hazards and expense of radioactive techniques.
It takes various forms. In the most common form, two antibody preparations are used in ELISA. An antibody (primary) specific to the test protein is adsorbed onto a solid substrate, and a known amount of the sample is added; all molecules of the test protein in the sample are bound by the antibody. A second antibody specific for a second site on the test protein is added; this is conjugated with an enzyme, which catalyses a colour change in the fourth reagent, added finally. The colour change is measured photometrically and compared against a standard curve to give the concentration of protein in the sample. ELISA is widely used for diagnostic and other purposes.
Industry:Biotechnology
Fine protoplasmic thread passing through the plant cell wall that separates two protoplasts.
Industry:Biotechnology
La progéniture de deux parents homozygotes qui diffèrent les uns des autres par les allèles présents dans un seul locus.
Industry:Biotechnology
Pour les milieux de croissance : un élément essentiel normalement requis dans les concentrations > 0,5 millimoles par litre.
Industry:Biotechnology
Une technique permettant de déterminer la présence ou l'absence d'une paire de nucléotides spécifique au sein d'un gène cible.
Industry:Biotechnology
Stage in prophase of meiosis I following the pachytene stage, but preceding diakinesis, in which one pair of sister chromatids begin to separate from the other pair, i.e., the centromeres begin to disjoin.
Industry:Biotechnology
Une cellule diploïde, formée par la fusion de deux gamètes haploïdes, lors de la fécondation chez les organismes eucaryotes avec la reproduction sexuée. C'est la première cellule de la nouvelle personne.
Industry:Biotechnology
La partie des organes reproducteurs dans les graines de plantes qui comprend le nucelle, le sac embryonnaire et les téguments.
Industry:Biotechnology
