End of effect of viruses on host cells

Question 1

acutely transforming retroviruses

Answer 1

viruses that steal the proto oncogene from the infected host cell DNA and then the virus converts the proto oncogene into the oncogene – cancer causing gene

Question 2

slow/chronic transforming retrovirus

Answer 2

virus genome gets inserted into regulatory gene of host cell DNA, as a result of the insertion, regulatory gene cannot function properly. There is no control on proto oncogene of host DNA = excessive cell division or cancer

Question 3

tumor antigens - new antigens appear ??

Answer 3

appear on the surface of tumor cells that may provoke an immune response

Question 4

example of expression of tumor antigens

Answer 4

FOCMA - feline oncornavirus membrane associated antigen — indicates viral infection and transforms cells into cancerous cells