Virally derived RNA molecules and cell types

My comment: No, it is not the first time. It is confirmation of the fact known to all serious scientists that nutrient-dependent biophysically constrained protein folding links RNA-mediated events to the physiology of reproduction.
The physiology of nutrient-dependent reproduction links the fixation of RNA-mediated amino acid substitutions to cell type differentiation in all individuals of all living genera via the conserved molecular mechanisms of cell type differentiation we first detailed in our 1996 Hormones and Behavior review section on molecular epigenetics.
Since then, those details have been linked from the nutrient-dependent pheromone-controlled physiology of reproduction in species from microbes to humans via supercoiled DNA and explanations of how it protect organized genomes from mutations linked to pathology and virus-driven genomic entropy.
See also: Viral proteins may regulate human embryonic development
Excerpt:

We’ve discovered that a specific class of viruses that invaded the human genome during recent evolution becomes reactivated in the early development of the human embryo, leading to the presence of viral-like particles and proteins in the human cells.”

See also: Certain virus-derived genomic elements have now been shown to actively regulate important developmental processes
They continue to report firsts more than a decade after science fiction author, Greg Bear predicted their findings based what he had learned about viruses and cell type differentiation from 1985 until 1999 when he publishe “Darwin’s Radio,” which was reviewed in “Nature.” Evolution rising from the grave