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Gene - The biologic unit of heredity.
A gene is composed of DNA. Genes make up chromosomes.
Gene therapy - A treatment in which
genetic information is either introduced, amplified, or deleted
from cells.
Gleason score - A numerical value given
to prostate cancers that quantitates tumor grade. Scores are assigned
to the most common pattern of cancer as well as the second most
common. Scores for each pattern range from 1 to 5. A score of
1 denotes a cancer that closely resembles benign or normal tissue.
A score of 5 is assigned to cancers that appear aggressive and
differ significantly from benign tissue.
Growth factors - Protein signaling
molecules, similar in structure and activity to the protein hormones,
which usually act in a paracrine or autocrine fashion to regulate
cell growth and differentiation.
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