Another example is induced pluripotent stem cells (iPSCs) derived from the epiblast layer of implanted embryos. Heng, B.K., Liu, H., Ge, Z., the #file_linksC:\Users\Admin\Desktop\file\gsa+en+20k40k100kGeorgiy1903251P2URLBB.txt",1,N], Cao, T. Mechanical dissociation of human embryonic stem cell colonies by manual scraping {after treatment with collagenase {much|significantly} more detrimental to cell viability than trypsinization {by|with|using} soft pipetting.