| tandem repeat sequence | <molecular biology> Multiple copies of the same base sequence on a chromosome, used as a marker in physical mapping. (09 Oct 1997) |
|---|---|
| tandem repeat sequences | Multiple copies of the same DNA base sequence on a chromosome; used as a marker in physical mapping of the chromosome. (12 Dec 1998) |
| trinucleotide repeat | <molecular biology> Repetitive part of a genome that may form part of the coding sequence of a gene. The length of such repeats is frequently polymorphic and unstably amplified repeats appear to be the major cause of such genetic diseases as Huntington disease, fragile X syndrome, spinobulbar muscular atrophy and myotonic dystrophy. (18 Nov 1997) |
| long-terminal repeat | <molecular biology> Identical DNA sequences, several hundred nucleotides long, found at either end of transposons and the proviral DNA, formed by reverse transcription of retroviral RNA. They are thought to have an essential role in integrating the transposon or provirus into the host DNA. Long terminal repeats have inverted repeats, that is, sequences close to either end are identical when read in opposite directions. In proviruses the upstream long-terminal repeat acts as a promoter and enhancer and the downstream long-terminal repeat as a polyadenylation site. Acronym: LTR (15 Nov 1997) |
| long terminal repeat sequences | Regions of the RNA genome associated with regulation, integration, and expression of retroviruses. (05 Mar 2000) |
| abdominal section | Transabdominal incision into the peritoneal cavity. Synonym: abdominal section, laparotomy, ventrotomy. Origin: celio-+ G. Tome, incision Vaginal celiotomy, opening the peritoneal cavity through the vagina. Synonym: culdotomy. (05 Mar 2000) |
| attached cranial section | Craniotomy with a segment of the calvaria and attached soft tissues turned as a flap to expose the cranial cavity. Synonym: attached cranial section, osteoplastic craniotomy. (05 Mar 2000) |
| axial section | A cross section obtained by slicing, actually or through imaging techniques, the body or any part of the body structure, in a horizontal plane, i.e., a plane which intersects the longitudinal axis at a right angle. Since actual sectioning in the transverse plane results in an inferior and a superior portion, an anatomical transverse section may be a two-dimensional view of the cut surface on the inferior aspect of the superior portion, or of the superior aspect of the inferior portion. By convention, in medical imaging transverse sections demonstrate the former unless otherwise stated. Synonym: axial section. (05 Mar 2000) |
| caesarian section | Procedure in which an infant, rather than being born vaginally, is surgically removed from the uterus. Also referred to as a C section. As the name Caesarian suggests, this is not exactly a new procedure. It was done in ancient civilizations upon the death of a near-full-term pregnant woman to salvage the baby. Julius Caesar (or one of his predecessors) was born by this procedure. Hence, the name Caesarian. The term section in surgery refers to the division of tissue. What is being divided here is the abdominal wall of the mother as well as the wall of the uterus in order to extract the baby. In Shakespeare's Macbeth the Witches' prophecy was that..none of woman born/ Shall harm Macbeth (IV.i). Unfortunately for Macbeth, the Scottish nobleman Macduff was from his mother's womb/ Untimely ripped. And thus not naturally born of woman (V.vii). Macduff was the only agent capable of destroying Macbeth. He killed Macbeth in battle. (12 Dec 1998) |
| vaginal birth after cesarian section | It was once the rule that after a c-section, the next delivery also had to be by c-section. Now vaginal delivery after cesarian section (vbac) is frequently feasible. See: vbac. (12 Dec 1998) |
| parasagittal section | A cross section obtained by slicing, actually or through imaging techniques, the body or any part of the body, or any anatomic structure in the sagittal plane, i.e., in a vertical plane parallels to the median plane. Since actual sectioning in the sagittal plane results in a right and a left portion, an anatomical sagittal section may be a two-dimensional view of the cut surface on the medial aspect of either portion. Synonym: parasagittal section. (05 Mar 2000) |
| median section | A cross section attained by slicing in the median plane, actually or through imaging techniques, the body or any part of the body which occupies or crosses the median plane or by slicing any generally symmetrical anatomic structure, such as a finger or a cell, in its midline. Since actual sectioning the median plane results in a right and a left half, an anatomical median section may be a two-dimensional view of the cut surface on the medial aspect of either half. Synonym: midsagittal section. (05 Mar 2000) |
| cesarian section | The obstetrical procedure is often spelled this way in the U.S. With just an e although the Roman emperor remains Caesar in America with an ae. Procedure in which an infant, rather than being born vaginally, is surgically removed from the uterus. Also referred to as a C section. As the name Caesarian suggests, this is not exactly a new procedure. It was done in ancient civilizations upon the death of a near-full-term pregnant woman to salvage the baby. Julius Caesar (or one of his predecessors) was born by this procedure. Hence, the name Caesarian. The term section in surgery refers to the division of tissue. What is being divided here is the abdominal wall of the mother as well as the wall of the uterus in order to extract the baby. In Shakespeare's Macbeth the Witches' prophecy was that..none of woman born/ Shall harm Macbeth (IV.i). Unfortunately for Macbeth, the Scottish nobleman Macduff was from his mother's womb/ Untimely ripped. And thus not naturally born of woman (V.vii). Macduff was the only agent capable of destroying Macbeth. He killed Macbeth in battle. See: Caesarian section. (12 Dec 1998) |
| cesarian section, lower segment | A Cesarian section in which the surgical incision (cut) is made in the lower segment of the uterus. (12 Dec 1998) |
| cesarian section, vaginal birth after | It was once the rule that after a C-section, the next delivery also had to be by C-section. Now vaginal delivery after Cesarian section (VBAC) is frequently feasible. (12 Dec 1998) |