Essays Tagged: "deletion"

How does the body achieve the functional silencing of antigen reactive clones?

rance in the T cell repertoire.Central tolerance.three T cell mechanisms for self tolerance: clonal deletion, clonal anergy and antigen specific suppressor T cells.Burnet proposed theory of clonal del ... the thymus self reactive TCR present at the CD4+8+stage, not at the CD4+8- or CD4-8+ stage Þ deletion occurred during thymocyte development.There is evidence that deletion occurs while thymocyt ...

(13 pages) 41 0 2.5 Jan/1995

Subjects: Science Essays > Biology > Human Biology

Description of the genetic disease William's Syndrome.

The cause of William's Syndrome is a hemizygous deletion on chromosome 7.One of the genes that is deleted is the LIMK1 gene which codes for the LIMK ... ill fluoresce. The molecular test is 95% accurate, only because 95% of patients show the hemizygous deletion ( does not seem to be an evolutionary benefit to Williams Syndrome. The a ... iams Syndrome have a 50% chance of passing the disease onto their children since it is a hemizygous deletion. Williams Syndrome is estimated to occur in 1/20,000 births. It affects males and females e ...

(2 pages) 58 0 3.0 Apr/2003

Subjects: Science Essays > Genetics & Genome Projects

Mutation in gene Unc-93 results in apparent muscle defects in C. Elegans.

a obtained from the Gel Electrophoresis suggests that N2 is the wild-type worm since its DNA had no deletions. Primers were used in a process called Polymerase Chain Reaction (PCR) to amplify regions ... led Polymerase Chain Reaction (PCR) to amplify regions on the unc-93 gene in order to determine the deletions in the DNA. Lu-57 had a deletion in Primer A and Lu-55 has a deletion in Primer B region ...

(11 pages) 51 0 5.0 Dec/2003

Subjects: Science Essays > Biology

Biology Project- Cri Du Chat

rder that this report discusses is "Cri Du Chat" syndrome. This disorder is a result of the loss or deletion, of a large part of the genetic material from the short arm of one of the pair of number fi ... re and has a 1:50,000 chance of incidence. Approximately 80% of the cases are caused by spontaneous deletion in the child, 10% are caused by mistakes in the number five chromosome of either parent. An ...

(3 pages) 31 0 4.8 May/2004

Subjects: Science Essays > Genetics & Genome Projects

This is an essay On prader-willi syndrome. It is in depth and fills a solid three pages. 820 words

they do know the cause of the abnormalities. 70% of all cases of PWS are caused by "parental deletion". This makes it the most common form of the disorder. The cause is; part of chromosome 15 i ... osome 15 inherited from the father (the part containing the PWS critical genes) is missing. Typical deletions are now classified as Type 1 or Type 2, depending on the size. Deletion happens for seemin ...

(3 pages) 25 0 4.0 Dec/2004

Subjects: Science Essays > Biology

Windows 2000 setup

enter when its finishedF8 to agreeEsc-don't repairHit D for delete partitionEnter to continue with deletionPress l to deletHit enter to setup partition in the spaceFormat the partition using the NTFS ...

(1 pages) 18 0 5.0 Jan/2005

Subjects: Science Essays > Computer Science

Genetically Modified Foods are ethically unacceptable

fied organism by human intention. It is a special set of technologies that concerns the alteration, deletion, or addition of the genetic makeup of living organisms such as animals, plants, or bacteria ...

(5 pages) 116 1 3.0 Oct/2006

Subjects: Social Science Essays > Controversial Issues


ecially by a computer. Databases are structured to facilitate storage, retrieval, modification, and deletion of data in conjunction with various data-processing operations. A database consists of a fi ...

(3 pages) 9 0 0.0 Nov/2001

Subjects: Businesss Research Papers