4 ms·
> 99%+ of viruses are either harmless or symbiotic There is no such thing as a symbiotic virus.
by craigsmansion 7y ago
> 99%+ of viruses are either harmless or symbiotic
There is no such thing as a symbiotic virus.
- wiml 7y agoPlacental mammals need certain endogenous retroviruses in order to reproduce.