Alteration of the genome of a cell by direct introduction of DNA, a small portion of which becomes covalently associated with the host cell DNA.
A gene construct introduced into an organism by human intervention.
The enzyme responsible for moving a transposon from one place to another.
A DNA element capable of moving (transposing) from one location in a genome to another in the same cell through the action of transposase.
A gene that drives a population to extinction during the process of spread as a result of destructive, self-reinforcing cycles of natural selection.
A type of DNA, such as a plasmid or phage that is self-replicating and that can be used to transfer DNA segments among host cells. Also, an insect or other organism that provides a means of dispersal for a disease or parasite.
Inheritance of a gene from parent to offspring.
Virus in blood.
The extracellular form of a virus (i.e., a virus particle).
Transplantation of cells, tissues, or organs from one species to another.
Transmission of an infectious agent from an animal reservoir to humans.
A fertilized oocyte.