Unique cell specific receptor/identification

[fredreload]

So every cell is different, the right and left body seems symmetric, but the organs are not. With that said, if I want to modify a specific cell/neuron located on the right hemisphere of my brain to change the gene expression, is there a way for me to target that cell specifically with the unique cell receptor? So the drug would work like an RFID, it would go "o, you are that cell on the right brain hemisphere from the unique cell specific receptor, so I would assume to make gene expression changes using this hormone from another receptor pathway." Do such a unique cell specific receptor/identification exist?

Edited November 29, 2020 by fredreload