intramembranous


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in·tra·mem·bra·nous

(in'tră-mem'brā-nŭs),
1. Within, or between the layers of, a membrane.
2. Denoting a method of bone formation directly from mesenchymal cells without an intervening cartilage stage (occurring, for example, in the calvaria), as distinguished from intracartilaginous bone formation.

in·tra·mem·bra·nous

(in'tră-mem'bră-nŭs)
1. Within, or between the layers of, a membrane.
2. Denoting a method of bone formation directly from mesenchymal cells without an intervening cartilage stage.
References in periodicals archive ?
Stimulation of intramembranous bone repair in rats by ghrelin.
In the mouse embryo, the intramembranous bone (MB) is highly stained, and we can compare similar staining of perichondria in chick and mouse (double arrow).
Whether intramembranous bone could also be reprogrammed into iPS cells remains to be determined.
Although the most important abnormalities are seen in bone reformations through intramembranous ossification in the clavicle, cranium, and the pelvis, endochondral bone growth is also mildly impaired and causes a mild form of dwarfism [2, 4].
On electron microscopy (EM), subepithelial and intramembranous electron-dense deposits (EDD) and electron-lucent deposits were mainly noted, but mesangial and subendothelial EDD were also partially detected (Figure 2(c)).
Another key difference is found in the electron microscopy where in C3 glomerulopathy, there are mesangial, subendothelial, or sometimes subepithelial or intramembranous deposits which are lobular and amorphous [21].
Fractures heal by three partially overlapping phases: the initial inflammatory phase, the repair phase comprising soft callus formation and intramembranous and endochondral ossification, and the remodeling phase, where the initially woven bone is converted to a lamellar bone until the original bone shape is restored [135].
Human stanniocalcin-1 or -2 expressed in mice reduces bone size and severely inhibits cranial intramembranous bone growth.
Deficient mineralization of intramembranous bone in Vitamin D-24-hydroxylase-ablated mice is due to elevated 1,25-dihydroxyvitamin D and not to the absence of 24,25-dihydroxyvitamin D.
Temporal gene expression profiling during rat femoral marrow ablation-induced intramembranous bone regeneration.
The major affected bones are those which undergo intramembranous ossification such as cranial vault, clavicles, maxilla, nasal, and lacrimal bones.[sup][5] It is characterized by the absence of the clavicles, which usually occurs in 10% of cases or the presence of hypoplastic clavicles which allow the hypermobility of shoulders that can move it up to the medial plane of the body.
[H.sub.2][O.sub.2] affects lipids and intramembranous proteins.

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