In oncogenic polyomaviruses , the tumor antigens are responsible for the transformation activity , although the exact molecular mechanisms vary from one virus to another .
Some , but not all , polyomaviruses are oncoviruses capable of inducing neoplastic transformation in some cells .
In oncogenic polyomaviruses , the tumor antigens are responsible for the transformation activity , although the exact molecular mechanisms vary from one virus to another .
Some , but not all , polyomaviruses are oncoviruses capable of inducing neoplastic transformation in some cells .