mesenchymal tissue


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Related to mesenchymal tissue: epithelial tissue, Ectomesenchymal

mesenchymal tissue

[¦mez·ən¦kī·məl ′tish·ü]
(embryology)
Undifferentiated tissue composed of branching cells embedded in a coagulable fluid matrix.
References in periodicals archive ?
At 1.2 cm CVRL, atrium was composed of mesenchymal tissue. The division of common atrium into right and left chambers was first achieved by appearance of crescent shaped septum primum in 1.9 cm CVRL buffalo foetus.
Both postnatal groups showed ductal epithelium as well as mesenchymal tissue association with histogenesis of islets.
Pieces of cartilage are visible in a scattered fashion in the mesenchymal tissue of the skull in which some areas contain perichondrium, whereas in the articular cartilage, there is no perichondrium.
Carefully extracting mesenchymal tissue such as myometrial smooth muscles and using double-labeling experiments argued against true epithelial contamination.
(14) Since pulmonary hamartomas are believed to originate from bronchial mesenchymal tissue and have a smooth muscle component in most cases, (10,15) a similar recruiting mechanism may apply in hamartomas that account for the numerous mast cells in the areas of PT.
Several reports of the coexistence of residual mesenchymal tissue and chronic middle ear inflammation in childhood have been published, (2,6-8) but the presence of mesenchymal tissue in the pathogenesis of silent otitis media is still debatable.
These tumors exhibit an admixture of malignant epithelial and mesenchymal tissue, with the latter occasionally demonstrating heterologous differentiation.
Researchers have suggested that progerin toxicity makes HGPS-iMSCs overly sensitive to their hypoxic microenvironment, leading to exhaustion of the MSC pool caused by replacing lost mesenchymal tissue [45].
In addition, SCEVs appear to lack myoepithelial differentiation ultrastructurally, and they lack the spectrum of morphologic mesenchymal tissue (ie, chondroid and bone) seen in other mixed tumors.[1]
(c) By the 9th week of human development, a triangular space composed of a mesenchymal tissue becomes visible below the patella (P) (highlighted by the blue dashed).
MSC are a heterogeneous group of multipotent cells, morphologically akin to fibroblasts, that form colonies and are capable of differentiation into mesenchymal tissue (osteocytes, chondrocytes, or adipocytes) [2-4].
In order to gain a maximum number of colonies per amount of nucleated cells, we examined the effect of plating density on nucleated cells from each type of mesenchymal tissue from the 8 donors.