Can cancer viruses infect cells if they don't have tails?

Cancer viruses, like all viruses, require specific mechanisms to infect host cells, typically involving the binding of viral proteins to cell receptors. The presence or absence of tails in viruses generally refers to structural characteristics and does not directly determine their ability to infect cells. Many viruses without tails, such as certain types of retroviruses, can still effectively attach to and enter host cells. Therefore, viruses can infect cells regardless of their structural features, as long as they possess the necessary components for attachment and entry.