Wait, see this is what sucks about the years going by, details fade more and more - maybe I’m having a brain fart which is totally likely, but I’m not remembering “fingerprints”?
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Eta:
I’m googling more on chimerism just out of curiosity, and came across this - See photo at link, wild - interesting article, also imo
This Woman Is Her Own Twin: What Is Chimerism?
“Most of the time, people with chimerism probably go undiagnosed, Tarshish said. Indeed, without specific biomedical tests (such as genetic testing), it's impossible for doctors to tell that a patient is a chimera, according to a
2009 paper about the condition. But there may be subtle clues to this condition: Some people with chimerism have "patchy" skin coloration (like Muhl does) or different-colored eyes, the paper said. In some cases, chimerism is diagnosed when a person is found to have two different
blood types.”
[...]
“Doctors have told Muhl that she has "two immune systems and two bloodstreams," she wrote in a
blog post published in March 2017, meaning cells in her
immune system and her blood have two sets of DNA.”
[...]
“It's hard to predict how the condition will manifest or which tissues will be most affected, Tarshish said. But it's common for one cell line to outgrow the other, so people end up having the majority of their cells come from one set of DNA, rather than a 50-50 split between the cell lines, Tarshish said.”
[...]
“Because chimerism is hard to diagnose, it's probably more common than we think, Tarshish said, although overall, it's still probably pretty rare.
Some cases of human chimerism have been reported before. For example, in 2002, a woman named Karen Keegan needed a kidney transplant, and doctors were puzzled when tests of possible family donors showed that she could not be the mother of two of her three sons, according to a
report of the case. The mystery was solved when doctors discovered that Keegan was a chimera — the set of DNA in her blood cells was different from that in the other tissues in her body.”
