strength Must in concern:
A. metaplasia
B. hyperplasia
C. dysplasia ***
Metaplasia: an initial change from normal cells to a different cell type (such as chronic irritation of cigarette smoke causing ciliated pseudo stratified epithelium to be replaced by squamous epithelium more able to withstand the insult).
Dysplasia: an increasing degree of disordered growth or maturation of the tissue (often thought to precede neoplasia) such as cervical dysplasia as a result of human papillomavirus infection. Dysplasia is still a reversible process. However, once the transformation to neoplasia has been made, the process is not reversible.
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Promatric