Conservation of cell types using single-cell RNA seq data

Question

[angus.j.g.campbell]

I am working with single cell RNA-seq data. I am looking for a cell state within a particular cell type. I've found it in mice and now I want to look for it in human data, but the cell type has undergone quite a bit of diversification in humans. Was wondering if anyone knows of a tool for cell type conservation analysis or for computing cluster distances between cell types with scRNA-seq data? R packages preferred as I have done the clustering in seurat but python tools could be used as well.