For my reseach, I had purchased several frozen vials of HFSC(Hair follicle stem cell) from Celprogen, but I could not characteriz the Celprogen-HFSC with several anti-human antibodies for recognizing human HFSC. In addition, their mophology look like epithelial cell with round shape, and was growing very very fast like cancer cells. I did whole RNA sequencing of Celprogen-HFSC, and the data for Celprogen-HFSC indicated the cells were not definatly from human sources, perhaps was CHO cell. I claimed the Celprogen several times but they always answered there was no problem in managing cells in Celprogen. At that time, I did not want to waste my time to conflict with Celprogen any more. However, recently, one of my companion purchased a frozen vial of PDLSC (Periodontal ligament Stem cell) from Celprogen, but also he had the same experience as I had. The cell morphology is not mesenchymal lineage, showed epithelial like appearance with bursting proliferation activity. Hence, I asked anyone who experience such things after purchased from CelProgen. If yes, please answer here or send me email: [email protected].