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A procedure used to demonstrate nucleotide sequence variations that occur in the same region of DNA between individuals within a species, or between alleles in an individual to detect mutations in various genes, such as oncogenes, tumor suppressor genes, or genes responsible for genetic diseases. The method detects different conformations adopted by partially denatured DNA fragments resulting from their specific nucleotide sequences under denaturing conditions. Denatured single-stranded DNA fragments are allowed to partially renature without formation of double-stranded DNA. The particular conformations adopted by each of the renatured fragments depend on each of their specific nucleotide sequences. The fragments are run on polyacrylamide gels to detect subtle changes in migration due to their particular secondary structures. Resulting fragment band in the gel will misalign if any point mutations are present to alter the conformation.
Artículo
Research record from J Vis Exp, 2026-10-13. PMID 42872719.
Artículo
Research record from Front Oncol, 2026-07-17. PMID 42539473.
Pruebas
An AFP tumor marker test is a blood test that measures the level of AFP (alpha-fetoprotein) in a sample of your blood. AFP is a protein that the liver makes when its cells are growing and dividing to make new cells. AFP levels are normally high in a fetus, but after birth, they drop very low. Healthy children and adults who aren’t pregnant have very little AFP in their blood.
Artículo
Research record from Mol Diagn Ther, 2026-10-08. PMID 42848264.
Pruebas
The determination of the amount of apoptotic circulating tumor cells present in a sample.
Indicadores
This gene is involved in cellular growth regulation and is purported to have tumor suppression activity.
Artículo
Research record from Blood Cancer J, 2026-06-27. PMID 42365009.
Pruebas
A beta-2 microglobulin tumor marker test measures the amount of a protein called beta-2 microglobulin (B2M) in your body fluids. The test usually uses a sample of your blood. It may also be done using urine (pee) or in rare cases cerebrospinal fluid (CSF).