For exam- ple, the evolution of placental mammals probably occurred after the endogenization of a retrovirus. Retroviral envelope proteins cause fusion of cell membranes, a process that not only allows the invasion of oncogenic viruses but also is required for the develop- men...
70]. In addition, other regulatory measures have been taken, such as the inclusion of both of these PFAS in the Stockholm Convention on Persistent Organic Pollutants (POPs) in