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Define Role in growth and cellular Differentiation?
The growth and differentiation of epithelial cells throughout the body are especially affected by vitamin A deficiency. In addition, goblet cell numbers we reduced in epithelial tissues and as a consequence, mucous secretions diminish. Cells lining protective tissue surfaces fail to regenerate and differentiate; hence they flatten and accumulate keratin. Classical symptoms of xerosis (drying or non-wet ability) and desquamation of dead surface cells as seen in ocular tissue (i.e. xerophthalmia) are the external evidence of the changes also occurring to various degrees in internal epithelial tissues. Current understanding of the mechanism of vitamin A action within cells outside the visual cycle is that cellular functions are mediated through specific nuclear receptors. Binding with specific isomers of retinoic acid (i.e.all Tran- and 9-cis-retinoic acid) activates these receptors. Activated receptors bind to DNA response elements located upstream of specific genes to regulate the level of expression of those genes. These retinoid-activated genes regulate the synthesis of a large number of proteins vital to maintaining normal physiologic functions. There may, however be other mechanisms of action that are as yet undiscovered.
Define about Traumatic needles Traumatic needles are needles with holes or eyes which are supplied to the hospital separate from their suture thread. The suture must be thread
Explain the Regulation of blood pressure? The renin-angiotensin system regulates the blood pressure. The synthesis of renin is decreased by calcitriol through its interaction
Assessment Infective endocarditis is characterised by insidious onset of fever, malaise, night- sweats and weight loss. Other signs include vomiting, fatigue, headache, mya
Question 1: What is the benefit of alternative splicing? Could there also be drawbacks of Alternative splicing? If yes, mention the same. Definitions of alternative splic
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STATE THE ECONOMIC AND ECOLOGICAL IMPORTANCE OF ECHINODERMS
Bi-and Poly-Functional Enzymes These enzymes are generated by genes obtained by fusion of the coding regions of two or more genes encoding various enzymes. In simple words, the
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