Examlex
Quota sampling, in which the makeup of the sample must reflect the makeup of the population on some pre-selected characteristics, often has a nonrandom component in the selection process.
Gene Therapy
A medical treatment that involves altering the genes inside a person's cells to treat or prevent disease.
Muscle
A tissue composed of fibres that contract to produce movement or maintain the position of parts of the body.
Blood
A bodily fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.
DNA Ligase
An enzyme that facilitates the joining of DNA strands together by catalyzing the formation of a phosphodiester bond.
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