defense nuclear agency.
the fundamental values or vision of an organization.
do not arm.
to put under a dna order because of mental illness.
forensic science technicians who work primarily in laboratories may specialize in the natural sciences or engineering. these workers, such as forensic biologists and forensic chemists, typically use chemicals and laboratory equipment such as microscopes when analyzing evidence. they also may use computers to examine dna, substances, and other evidence collected at crime scenes. they often work to match evidence to people or other known elements, such as vehicles or weapons. most forensic science technicians who perform laboratory analysis specialize in a specific type of evidence, such as dna or ballistics. bls.gov
cdc manages pulsenet’s database, which keeps track of each bacteria dna fingerprint collected nationwide since 1996. this allows investigators to quickly connect different fingerprints to each other and determine whether multiple people became sick from bacteria with the same dna fingerprint. these illnesses are then investigated together to determine if there is a likely source. cdc.gov
researchers in germany reported the creation of a dna-based system for performing reverse genetics studies on the ebola virus. this system introduced the possibility of reconstituting live ebola virus from dna in the absence of a viral sample. other researchers expressed concern that this information could lead to the artificial synthesis of the virus, increasing the potential for agent proliferation, as dna can be more safely transferred than viral samples.26 cia.gov
some dna testing services only perform analysis of the y-chromosome or mitochondrial dna. the y-chromosome analysis can only be performed on male dna and only provides data on the direct paternal lineage. the mitochondrial dna analysis can be performed on male or female dna, but only provides information on the direct maternal lineage. contrarily, ancestry analyzes the entire genome. the analysis performed by ancestry and the test results have no limitations based on gender. everydayhealth.com
between the genes, or coding loci, on the dna of higher organisms, there are long portions of dna, often referred to as junk dna, that code no proteins. sometimes junk dna occurs within a gene; when this occurs, the coding portions are called exons and the noncoding (junk) portions are called introns. junk dna makes up 97% of the dna in the human genome. little is known of its purpose. factmonster.com
in the beginning there was dna. that is what i want to talk about is this dna. it has now become possible to do mass sequencing of dna in the sense that you can take someone’s dna, it goes on a chip, and you can get one click on a chip and determine whether 500,000 particular lines of the dna are present. we plan on doing this, we and our colleagues at cdc plan on doing this and making this available. hhs.gov
between the genes, or coding loci, on the dna of higher organisms, there are long portions of dna, often referred to as junk dna, that code no proteins. sometimes junk dna occurs within a gene; when this occurs, the coding portions are called exons and the noncoding (junk) portions are called introns. junk dna makes up 97% of the dna in the human genome. little is known of its purpose. infoplease.com
neighborhood watch db71852 9 hours 6 minutes by cammie mcgovern read by celeste lawson twelve years after she’s wrongly imprisoned for killing her neighbor while sleepwalking, librarian betsy treading is released based on dna evidence. as she now begins her own investigation into the murder, betsy learns startling things about herself and her suburban neighbors. some strong language. 2010. loc.gov
dna fragmentation index testing. dna fragmentation index testing measures the quality of the dna contained within sperm. it is reported as a percentage of sperm dna that has "breaks" in the dna strands. increased dna fragmentation rates may make it more difficult to achieve a successful pregnancy both naturally, and using artificial reproductive technology such as intrauterine insemination or in-vitro fertilization. mayoclinic.org
a stool dna test (cologuard or fit-dna test) has also been developed as a screening tool. dna testing identifies abnormal genes in stool that are characteristic of colorectal cancer from cells that have broken off from colorectal cancers and some premalignant tumors. the fit-dna is a stool dna test (mt-sdna), combining fecal dna, fecal immunochemical test (fit), and dna methylation assays. (dna methylation is a type of genetic abnormality that controls the expression of the abnormal dna.) medicinenet.com
the major function of dna polymerase eta is to replicate dna that has been damaged, particularly by ultraviolet (uv) rays from sunlight. most other dna polymerases are unable to replicate dna with this type of damage. when they reach a segment of damaged dna, they get stuck and the replication process stalls. however, when dna polymerase eta encounters damaged dna, it skips over the abnormal segment and continues copying. this activity, which is known as translesion synthesis, allows cells to tolerate some abnormalities created by uv exposure. without this tolerance, unrepaired dna damage would block dna replication and cause the cell to die. therefore, dna polymerase eta plays an essential role in protecting cells from some of the effects of dna damage. medlineplus.gov
"finding tumor dna in the blood is like looking for a needle in a haystack. for every 100 dna fragments, only one may come from the tumor, and the rest may come from normal cells, mainly bone marrow cells," said razavi. "our combined analysis of cell-free dna and white blood cell dna allows for identification of tumor dna with much higher sensitivity, and deep sequencing also helps us find those rare tumor dna fragments." medpagetoday.com
dna vaccines use recombinant dna that encodes a specific (defined) antigenic protein. the dna is delivered directly via transcutaneous electroporation, incorporated into viruses that are injected directly into patients, or introduced into dendritic cells obtained from the patients, which are then injected back into them. the dna expresses the target antigen, which triggers or enhances patients’ immune response. clinical trials of dna vaccines have shown promising results. merckmanuals.com
dna was extracted from stool samples using a powersoil htp 96-well soil dna isolation kit (mo bio laboratories) and an epmotion 5075 pipetting system. purified dna was used to prepare a shotgun sequencing library using an illumina nextera xt library preparation kit according to the standard kit protocol, including 12 cycles of limited-cycle pcr. the tagmentation time was increased from 5 min to 10 min to improve the dna fragment length distribution. the library was sequenced using one lane of an illumina hiseq 4000 platform and yielded 125-bp paired-end reads. nih.gov