Scientists discovered that memory formation isn’t limited to the brain. Non-brain cells can activate memory genes, responding to signals.
In this study, the scientists simulated the process of spaced learning by examining two types of non-brain human cells — one from nerve tissue and one from kidney tissue — in a laboratory setting.
These cells were exposed to varying patterns of chemical signals, akin to the exposure of brain cells to neurotransmitter patterns when we learn new information.
The intriguing part? These non-brain cells also switched on a “memory gene” – the same gene that brain cells activate when they detect information patterns and reorganize their connections to form memories.
There is another body of research that deals with a person's behavior can be heavily influence by endocrine actions. Organs can affect current endocrine responses. So there is a suggestion here that your kidney may not remember the Aunt Jean has a mole, it may remember why it releases certain hormones which can effect how you behave.
I dunno. We (both my wife and I) can and have had long conversations with my gut (when there's a rumbly in my tumbly you can hear it across a crowded room) and my gut seems to remember shit. It also has a strange fascination with cheese.