Multiple origins of endogenous virophage and polinton-like virus in the halophilic protist Halocafeteria seosinensis
This study reveals the unprecedented abundance and diversity of endogenous virophages and Polinton-like viruses within the genome of the halophilic protist *Halocafeteria seosinensis*, highlighting their complex genetic exchange, supraparasitism by mobile elements, and significant contribution to the host's genomic landscape.