<prompt> HPV causes which change in cervical epithelium ?Induction of apoptosisInduction of necrosisImmoalization of epithelial cellsBy stimulating telomerase  <response>: Ans. is c i.e., Immoalization of epithelial cells HPV selectively infects the epithelium of skin and mucous membrane and may immoalize the keratinocytes leading either asymptomatic infection, or was or neoplasia.Products of E-genes E6, E7 are related to immoalization or malignant transformation of keratinocytes by interfering with p53 and Rb genes, respectively. 