{HEAD ~ The cell population} includes a single cell suspension of {TAIL ~ ES cells} encapsulated within an alginate polyelectrolyte microenvironment 
{ HEAD ~ The cell population } includes a single cell suspension of { TAIL ~ ES cells } encapsulated within an alginate polyelectrolyte microenvironment
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH