"The problem of course is that there are no scientists or medical researchers who have anything definite to compare our samples to."
You don't need other people to do job for you.
Become your own scientist and prove me wrong or right!
Here is a simple challenge:
Flush everything from your intestines.
You can achieve that by doing liver flush, or by drinking Epsom Salts , or some other laxative.
When your intestines er 100% clean, and only clean water is coming out, you eat bananas.
Live on bananas for at least 24 hours, or until you need to empty your bowel.
You collect what comes out and examine it under magnifying glass.
Surprise, surprise: you will find plenty of "cotton balls" with "dark legs".
Repeat the experiment, but this time eat no bananas and no fruit, instead eat regular food after the flush.
Surprise, surprise: you will NOT find a single "cotton ball" with "dark legs".
Become your own scientist and prove me wrong.
Then come to this forum and report your results.
"cotton balls" with "dark legs" = undigested banana pieces.
Break a banana and you will see many fibers inside.
Those fibers, when colored by digestive juices become "dark legs".