Conjugation has classically been considered a bacterium-to-bacterium DNA transfer driven by the donor cell and is typically plasmid-encoded. Theoretically it is possible that any type of cell can serve as the recipient. In December
Waters used the RK2 'shuttle vector' plasmid system to determine if
These results may explain the presence in the human genome of 41 genes that are shared by humans and bacteria.
In practical terms, bacteria could become important vectors in...