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Explain about the barrier function of epithelium and endothelium in corneal hydration.
Barrier Function of Epithelium and Endothelium:
Epithelium offers twice the resistance as endothelium. Barrier function of epithelium is maintained by desmosomes, mitotic activity of basal cells and migration of limbal stem cells into basal cell layer. Corneal endothelial barrier is leaky compared to epithelium. The permeability results from low resistance intercellular junctions at apical basement membrane. The tight junctions do not form complete zona occludens around the cells. The endothelial barrier function is calcium dependent.
Determination of Neural Ectoderm by Induction Earlier you know that the dorsal mesoderm induces the ectoderm to differentiate into neural tissue. Spemann and his co-workers co
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To show that growing seeds take in oxygen Cork up one end of a tube, having first placed inside some damp cotton wool and some mustard seeds. Immerse the open end in dilute ca
briefly deccribe the eggs snd follicles
Classification
When the chromosomes are depleted of histones they are seem to have a central fibrous 'protein scaffold' or nuclear matrix to which the DNA is attached in loops. Therefo
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