This is classic New Scientist:
For starters, we are chimeras: some parts of us are human, but genetically not “us”. Most, if not all, of us contain a few cells from our mother, our grandmothers and even elder siblings that infiltrated our bodies in the uterus.
Women who have carried children host such cells too. “Something like 65 per cent of women, even in their 70s, when autopsies were performed, had cells in their brains that were not theirs,” says David Linden at Johns Hopkins University in Maryland. Chimeric cells have been found to contribute to both good and bad health, for example promoting wound healing but also triggering autoimmune disease.
A handful of people even turn out to be true chimeras, created from a merger in the uterus of two non-identical, “fraternal” twins.Graham Lawton, “Why it’s the aliens living inside you that create your sense of you” at New Scientist
You need to pay to view the whole thing but the basic message is, you think you are a self but you are not. Highly convenient for certain types of government.
New Scientist seems to be back to their usual schtick. Their 13 reasons for questioning Darwinism were probably some kind of aberration.
Now it’s the usual pop science again: Alien organisms explain your sense of yourself! But never mind that! Darwinism defends you from an attack of Boltzmann braaaaaiiiiinnnns!