You’re right in most of your comments however a fine-tuned model will be able to pick up nuances which are missed by a general model. For instance, AVP is used

You’re right in most of your comments however a fine-tuned model will be able to pick up nuances which are missed by a general model. For instance, AVP is used for HSCs, yet not related to flow cytometry at all. If you fine-tune an LLM with experts by your side one time it will be able to give you the grained cell types such as T-cell subsets. Plus, a regression model won’t give you the reasoning behind the given cell type annotation.