This suggests changelings may utilize subspace properties, which would also hint at how they can effectively "change" their mass, like Odo turning into a rat.
When Robert Moore used to answer questions on AOL I asked him a few about changelings, I would have to go through the archive to find it. he said that Odo's communicator goes into subspace when he reverts to liquid form, and that it was only Odo that needed revert to liquid form every so often, the founders know more about shapeshifting (so did Laas) so perhaps when they shapeshift they could actually become "real solids" (humanoids, though I think that's bad terminology, there are solids that aren't humanoids, like the Horta, Kelvins who is thier true forms are twice a humanoid's height, maybe 8472, but they were bipedal) like Odo did temporarily, or who knows, maybe it takes the whole great link or some at least several changelings to perform this feat on someone
And even to become fire like Laas did.
Correction...immitating fire. There's no reason to assume Laas in fact "became" fire in every conceivable sense. We do know of living creatures(fireflies) that can produce light. The best conclusion seems to me is that Founders can either produce or possess cells capable of the same feat(unless I'm misunderstanding the chemical process fireflies utilize).
I doubt they even have cells, though it has been stated they have DNA, but I don't see how they could, when he became a gas, the molecules are independant of each other, how could the genes hope to stay together through such drastic changes, they don't need to eat, so perhaps thier enzymes never need to be replaced (we don't know how they get thier energy either, hmm perhaps it comes from subspace?)
The differences in immune systems and biology is a Red Herring. Using this arguement would be implying thousands of races assimilated by the Borg have identical immune systems and biological, when we know significant differences exist between just vulcans, humans, klingons, etc, etc. Not to mention other more distant races in the Delta Quadrant, like the Hirogen, etc.
First of all, just how big are nanoprobes?
They are signifcantly bigger than blood cells. They do not enter the living cells, they attach to them. Visuals from Voyager's medical bay showed this quite clearly. I can supply a perfect screenshot if required as proof.
Yes, I would, if you could PM me about it. And how did you get it, did you hook a tv to your computer, then catch it on your screen? I just got snag-it, used to have a TV card.
The name implies they are nanometers large (billionths of a meter) But blood cells are way larger than that.
Terminology is overruled by visual evidence. A sandwhich has the term "sand" in it; does not mean sand is part of a sandwhich though.
Who said I agreed with it, I just said "the name implies"
Changelings don't have blood,
Blood isn't required for nanoprobes to assimilate something. Unless someone were to assert computer consoles and technology that have been infected and assimilated by nanoprobes have "blood".

Could you be more specific? We know they assimilate through the blood, I'm not sure how the nanoprobes take control of a computer, unless they could "hack" it and get the computer to send whatever signals they want it to send, but like I said
more specifically what do the nanoprobes do the hardware, buses, processor, er....actually scratch that, we're dealing with a quantum computer now, and they would need to be able to control sub-atomic particles, oh boy.
and it's never been clear what exactly happens when they shift to another shape or state of matter (like Laas becoming fog or the founders clouds) We know that the material they are made of can be used to make humanoid organs (When Bashir borrowed some from Odo) And we've heard of thier "bio-molecular structure" in the die is cast and thier "morphogenic matrix" in the Laas ep and another episode. The nanoprobes would first have to gain control of thier mind, and subjugate it,
Actually, mind control isn't required for nanoprobes to do their work.
who said it was? But it is required for them to controlled by the collective.
You can see this in Star Trek: First Contact. A Enterprise security officer is injected with nanoprobes, which are clearly assimilating him to a significant degree, despite him still possessing free will to beg Captain Picard for help.
So? The nanoprobes hadn't gotten all over his brain yet, and made him a slave.
and we what don't know constitutes one for a changeling, for all we know they could be one huge organ. Why is it odo had no sense of smell or taste, but did have "eyes" and "ears" that could see and hear?
This is geting more into the nature and makeup of changelings. Difficult to determine by myself anyhow.
The overall point being is that Borg nanoprobes have canonly been witnessed to assimilated organic and non organic targets. Given that versatility, I don't consider it highly likely that changelings would be effectively resistant against Borg nanoprobes, particularily in the light of Starfleet engineers being capable of creating a disease that works on them quite well.
The nanos would probably just float around in the goo and not be able to attach to anything since it is too small. I still need more specific info like how they control machines and assimilate/subjugate through the blood, getting control of thier mind and making them obey is the first order of business.
There must be something about changelings that's constant, no matter what form they take, if the entire great link couldn't cure it, the info is inconsistant.
The Voyager doctor actually figured that out. And the Voyager crew kept the Borg from obtaining or learning how it had been done.
Um, wasn't Seven part of the group, and knew while
still being in the collective?