part_of part of part of derives_from embryonic stem cell organism developmental stage organism part stem cell derived cell line ESC derived cell line ESC derived cell line is a cell line that derives from an embryonic stem cell. ESC cell line embryonic stem cell derived cell line Sirarat Sarntivijai "To date, human embryonic stem cell (hESC) lines have been obtained from fresh and frozen embryos of varying quality at morula and blastocyst stages of development (Hoffman and Carpenter, 2005a)." Differences between human embryonic stem cell lines C.Allergrucci and L.E.Young Hum. Reprod. Update (March/April 2007) 13 (2): 103-120. doi: 10.1093/humupd/dml041 First published online: August 26, 2006 http://humupd.oxfordjournals.org/content/13/2/103.full