Hello, I'm new to seurat and bioinformatics in general. I've been doing data analysis on cells that have 5 different feeding conditions. After following the seurat pbmc tutorial, I made a violin plot showing the expression of a genetic marker, but I realized that one of my clusters only has cells for 4 of the conditions. There were almost 12k cells in total, so this did not make much sense to me as I thought all clusters would definitely have all conditions expressed. Is this possible?