In mathematics‚ a matrix (plural matrices) is a rectangular array of numbers‚ symbols‚ or expressions‚ arranged in rows and columns.[1][2] The individual items in a matrix are called its elements or entries. An example of a matrix with 2 rows and 3 columns is Matrices of the same size can be added or subtracted element by element. But the rule for matrix multiplication is that two matrices can be multiplied only when the number of columns in the first equals the number of rows in the second. A
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The Matrix The matrix will forever hold a place as one of my favorite childhood movies as the action and computer generated imagery back in 99’…were ahead of its time. Today‚ I’m twenty years old‚ in college and assigned to re-watch this bad-ass movie and utilize my mature adult intelligence to “critically” think about the socially constructed reality at a college level. Therefore‚ I shall proceed to say that after watching the Matrix‚ the movie pertains to the socially constructed reality as a
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This phase consists of different subphases‚ which can last up to 4 weeks in the clean and uncontaminated wound. These sub phases do not happen in discrete time frames but constitute an overall and ongoing process. The sub phases are "fibroplasia‚ matrix deposition‚ angiogenesis and re-epithelialization" (Cho & Lo‚ 1998). The first sub phase of granulation process is fibroplasia. In days 5-7‚ fibroblasts have migrated into the wound‚ laying down new collagen of the subtypes I and III. In normal
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Connective tissue consists of individual cells scattered within an extracellular matrix. Unlike cells of epithelial tissue‚ connective tissue cells are not directly attached to one another. Individual connective tissue cells are normally separated from one another by varying amounts of extracellular matrix. CELLS: The most common connective tissue cells are: Fibroblasts‚ which secrete collagen and other elements of the extracellular matrix. Adipocytes‚ which store fat. Mast cells‚ macrophages‚ and
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dynamic interactions between the extracellular matrix and the actin cytoskeleton whenever a cell is motile. Integrins bind to the extracellular matrix and link to the actin cytoskeleton via a shirt cytoplasmic tail; they also help determine cellular binding specificity because the extracellular domain of integrins recognizes a diverse array of matrix ligands such as fibronectin‚ collagen‚ and laminin. Generally‚ integrins bind to a specific motif within the matrix protein; specifically 9 different
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DSD 251 Oral Biology and Histology 2 DENTAL PULP: (Origin-Functions and Anatomy-Histology Vascularity and Lymphatic supply –Nerve supply. Regressive changes of the pulp: fibrous changes pulpal stones –diffuse calcifications) DEFINITION : The pulp is a delicate mesenchymal connective tissue that occupies the pulp cavity in the central part of tooth. The normal pulp is pink‚ coherent soft tissue is noted‚ dependent on its normal hard dentin for protection. Dentin and pulp are embryologically‚ histologically
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matrices consist of either natural or synthetic polymers that provide a supportive environment in which cells can attach‚ proliferate‚ and differentiate. Successful cell embedding requires hydrogels that are complemented with “biomimetic and extracellular matrix components‚” to provide biological signals that elicit specific cellular responses and direct the formation of new tissue. One pioneer in this field is a company named Organovo. This company was created by a research group lead by Professor
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production of extracellular matrix of articular cartilage chondrocytes in vitro Ying Denga‚ Xing-Sun Linb‚ Zhong Zhenga‚ Jin-Guang Denga‚ Jin-Chun Chena‚ Hui Mab‚ Guo-Qiang Chena‚* a Department of Biological Sciences and Biotechnology‚ Tsinghua University‚ Beijing 100084‚ China b Department of Physics‚ Tsinghua University‚ Beijing 100084‚ China Received 25 November 2002; accepted 13 May 2003 Abstract The present investigation describes the production of extracellular matrix of rabbit articular
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The Matrix – to be or not be The Matrix consists of a great variety of questions that have tortured the world for centuries. How can we know that what we see around us is real? How can we be certain that the items and living beings around us exists? If the world as we know it turns out to be an illusion‚ what do we do? Numerous philosophers and other thinkers have pondered these questions since the beginning of time. How can we know that what we see around us is real? How to be certain that
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micro-porosity‚ the cells can insert fibrils so that they can attach firmly to the scaffold walls. Most of the approaches use bioreactors to enhance reproduction of the cells. For example‚ a mixture of polcaprolactone (PCL) which is biodegradable and acts as a matrix materialis used to manufacture a scaffold for producing a mixture of bone and cartilage and then implanted into a rabbit in one of the studies. Also‚ adding tri-calcium phosphate (TCP) improves the biocompatibility to enhance bone regeneration. But
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