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Found F 367 times.

Displaying results 1 to 10.

1. F pilus (conjugation bridge)
A long, narrow structure which protrudes from the surface of the "male" bacterial individual and connects the "male" to the "female" bacterial individual during the process of bacterial conjugation , when genetic material in the form of the F plasmid is transferred between individual bacterial cells.

2. F protein
A protein derived from the Sendai virus which can be used in the laboratory to cause cell fusion between somatic cell s (any cell that is not a gamete ). It is also used to make fusogenic vesicle s.

3. F(ab)2 fragment
A fragment of an antibody protein which includes the antigen -binding portions but not the Fc section. They can be produced by treating whole antibodies with protease s that will specifically cleave off the Fc section.

4. F(ab)2 fragment (Fab fragment, F-ab fragment)
The portion of the immunoglobulin or antibody molecule which contains the binding site for antigen s. The exact sequence of amino acid s in the area varies widely from molecule to molecule to accommodate a wide variety of antigens which the body may encounter. There are two such regions on each molecule (individually called Fab fragments or F-ab fragments). The molecule is shaped like the letter Y and the F(ab)2 fragments are located on the upper halves of the two fork parts. (The rest of the molecule, the stem and the lower parts of the forks, are the Fc fragment ).

5. F-1 generation
"Filial-One" generation. The first generation of offspring which results after mating or genetically crossing two types of parents with different genotype s or phenotype s. (The parents are known as the P generation.)

6. F-2 generation
"Filial-Two" generation. The generation of offspring which results from mating or genetically crossing members of the F-1 generation to each other. Members of this generation are two generations removed from the original parent generation, or the P generation.

7. Fabric mulch
Polypropylene material placed on the ground around plants to prevent weed growth.

8. Fabry disease
An X-linked genetic disease in which the gene coding for the enzyme alpha-galactosidase A (a type of galactosidase ) is nonfunctional. As a result, sphingolipid and glycolipid compounds accumulate in the blood vessel walls of people with the disease, eventually causing vascular malfunctions.

9. Facilitated diffusion (passive diffusion, passive transport)
The movement of polar molecules across a cell membrane via protein transporters.

10. Facing
The outer layer of a slope revetment.

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