(n.) An elastic cartilagelike rod which is developed beneath the medullary groove in the vertebrate embryo, and constitutes the primitive axial skeleton around which the centra of the vertebrae and the posterior part of the base of the skull are developed; the chorda dorsalis. See Illust. of Ectoderm.
Example Sentences:
(1) The histochemical study of the LDH in the Trout embryo during the early organogenesis shows a specific localization in notochord cells, in mesodermic cells of the terminal knob and in some prosencephalic neuroblasts.
(2) The notochord, which is composed of a stack of flat cells surrounded by a connective tissue sheath, elongates dramatically and begins straightening between stages 21 and 25.
(3) Autoradiographic studies show that tritiated proline is taken up by notochordal cells and secreted to the extracellular space where label is associated with basal lamina, microfibrils and ground substance.
(4) Metabolic events in somites related to hyaluronic acid are not influenced by the notochord.
(5) The establishment of myeloschisis was followed by local separation of the notochord from an open area of neural tube, but not by overgrowth of neural tissue.
(6) By 7 days, notochordal uptake is markedly diminished, and no uptake of isotope occurs from 8 days onward.
(7) It first forms on the lateral portion of the neuroepithelium of the neural folds and then extends ventrally into the region adjacent to the notochord; (ii) BL becomes continuous beneath the epidermal ectoderm (EE) that overlies the NC cell region only during the terminal stages of NC cell emigration; (iii) BL does not form over the dorsal portion of the neural tube until NC emigration is terminated; and (iv) the morphology of the BL changes as development proceeds.
(8) Although they are presumed to arise from congenital notochordal remnants, it is rare for these tumors to present in childhood.
(9) Six chordomas, ten fetal notochords and eight adult notochords were stained for keratin, vimentin, GFAP, desmin, CEA, EMA and s-100 protein.
(10) A "diffuse pattern" that was seen in the histological appearance of 4 cases of the chordoma, including 2 cases with metastases, was not observed in the notochord and was considered to indicate the malignant nature of such chordoma.
(11) The results lead to the assumption that the early embryos already possess cholinergic receptors, probably located in the notochord.
(12) Adjacent to the caudal half of each somite, these cells penetrated no further than the myosclerotomal border, but opposite the rostral somite half, they were found next to the sclerotome almost as far ventrally as the notochord.
(13) These results indicate that 1) Engrailed-2 expression is suppressed in the most ventral neural tube owing to induction of the floor plate by the notochord, and 2) that the presence of an underlying notochord is not required for correct rostrocaudal expression, suggesting that multiple pathways act in the patterning of the rudiment of the central nervous system.
(14) Neural induction through the presumptive notochord was tested by means of the sandwich method.
(15) The notochord and neural tube are well developed by 3 days and surrounded by sclerotome, myotome, and dermatome cells.
(16) Minute fragments of the notochord of Balanoglossus sp.
(17) Glycosaminoglycans (GAG) are found primarily in the dorsal fin and in the ECM surrounding the notochord.
(18) Based on these facts, it is to be concluded that it is not the inducer of notochord, but the surrounding mesenchyme that is of primary importance for the determination of the types of neural tissue.
(19) A floor plate-specific chemoattractant was used as a marker to examine the role of the notochord in avian floor plate development.
(20) 2G9 was used to show that both notochord and somites are capable of neural induction, and the stimulus is present as late as stage 22.
Support
Definition:
(v. t.) To bear by being under; to keep from falling; to uphold; to sustain, in a literal or physical sense; to prop up; to bear the weight of; as, a pillar supports a structure; an abutment supports an arch; the trunk of a tree supports the branches.
(v. t.) To endure without being overcome, exhausted, or changed in character; to sustain; as, to support pain, distress, or misfortunes.
(v. t.) To keep from failing or sinking; to solace under affictive circumstances; to assist; to encourage; to defend; as, to support the courage or spirits.
(v. t.) To assume and carry successfully, as the part of an actor; to represent or act; to sustain; as, to support the character of King Lear.
(v. t.) To furnish with the means of sustenance or livelihood; to maintain; to provide for; as, to support a family; to support the ministers of the gospel.
(v. t.) To carry on; to enable to continue; to maintain; as, to support a war or a contest; to support an argument or a debate.
(v. t.) To verify; to make good; to substantiate; to establish; to sustain; as, the testimony is not sufficient to support the charges; the evidence will not support the statements or allegations.
(v. t.) To vindicate; to maintain; to defend successfully; as, to be able to support one's own cause.
(v. t.) To uphold by aid or countenance; to aid; to help; to back up; as, to support a friend or a party; to support the present administration.
(v. t.) A attend as an honorary assistant; as, a chairman supported by a vice chairman; O'Connell left the prison, supported by his two sons.
(n.) The act, state, or operation of supporting, upholding, or sustaining.
(n.) That which upholds, sustains, or keeps from falling, as a prop, a pillar, or a foundation of any kind.
(n.) That which maintains or preserves from being overcome, falling, yielding, sinking, giving way, or the like; subsistence; maintenance; assistance; reenforcement; as, he gave his family a good support, the support of national credit; the assaulting column had the support of a battery.
Example Sentences:
(1) This excellent prognosis supports a regimen of conservative therapy for these patients.
(2) It is supposed that delta-sleep peptide along with other oligopeptides is one of the factors determining individual animal resistance to emotional stress, which is supported by significant delta-sleep peptide increase in hypothalamus in stable rats.
(3) Pathological and immunocytochemical data supported the diagnosis of medullary thyroid carcinoma.
(4) Technical factors that account for increased difficulty in these patients include: problems with guide catheter impaction and ostial trauma; inability to inflate the balloon with adequate guide catheter support; and need for increased intracoronary manipulation.
(5) Cantact placing reaction times were measured in cats which were either restrained in a hammock or supported in a conventional way.
(6) In a debate in the House of Commons, I will ask Britain, the US and other allies to convert generalised offers of help into more practical support with greater air cover, military surveillance and helicopter back-up, to hunt down the terrorists who abducted the girls.
(7) Models able to describe the events of cellular growth and division and the dynamics of cell populations are useful for the understanding of functional control mechanisms and for the theoretical support for automated analysis of flow cytometric data and of cell volume distributions.
(8) The presence of O-glycosidic linkages between carbohydrate and protein in the DF3 antigenic site was further supported by the presence of NaBH4-sensitive sites.
(9) Theresa May signals support for UK-EU membership deal Read more Faull’s fix, largely accepted by Britain, also ties the hands of national governments.
(10) Consensual but rationally weak criteria devised to extract inferences of causality from such results confirm the generic inadequacy of epidemiology in this area, and are unable to provide definitive scientific support to the perceived mandate for public health action.
(11) The program met with continued support and enthusiasm from nurse administrators, nursing unit managers, clinical educators, ward staff and course participants.
(12) Male sex, age under 19 or over 45, few social supports, and a history of previous suicide attempts are all factors associated with increased suicide rates.
(13) It also provides mechanical support for the collateral ligaments during valgus or varus stress of the knee.
(14) The data support the conclusion that accumulation of lipid II is responsible in some way for the hypersensitivity of delta rfbA mutants to SDS.
(15) The International Monetary Fund, which has long urged Nigeria to remove the subsidy, supports the move.
(16) He voiced support for refugees, trade unions, council housing, peace, international law and human rights.
(17) Training in social skills specific to fostering intimacy is suggested as a therapeutic step, and modifications to the social support measure for future use discussed.
(18) We want to be sure that the country that’s providing all the infrastructure and support to the business is the one that reaps the reward by being able to collect the tax,” he said.
(19) Evidence is presented in support of the hypothesis that fresh bat guano serves as a means of pathogenic fungi dissemination in caves.
(20) This postulate is supported by a limited study of the serovars present among the isolates.