Neurotransmitter type filter in MERFISH data

Hello!

I am new exploring the Allen Brain Map resources, so maybe this is a silly question. Exploring the Spatial Transcriptomics database for mouse brain, I noticed that when filtering by neurotransmitter type and NA , the results include over 1.5 million cells distributed across the entire brain. This is puzzling, as noradrenergic cells are known to be restricted to specific nuclei in the brainstem.

Can anyone clarify what the neurotransmitter type filter represents in this context? It seems unlikely to correspond directly to the neurotransmitter released by the cells. Thank you in advance!

The neurotransmitter type “NA” actually means the cell has not been assigned a neurotransmitter type (“NA” = “not applicable”). We represent noradrenergic cells with the abbreviation “Nora”. Sorry for the confusion.

Thank you very much for the clarification!! Now it makes sense… As I imagined, it was a silly question :woman_facepalming: :slightly_smiling_face: