If our consciousness is not located in the brain, but simply experienced by the brain to allow our experiencing it, what about cellular consciousness? Is that also not located in the cells of the body but linked to and experienced by the cells? Where is cellular consciousness housed?

This is true as well, that consciousness is not within the physical, and thus not contained by it but linked to it, and can thus be influenced in a kind of back-and-forth exchange of information. The simplest way to think of this, is there being a kind of field of consciousness enveloping the body. The portion closest to the body, physically, is the cellular consciousness and the higher functions are in separate layers that connect where they need to with physical cells, tissues, and organs.