,Supporting cell density (cells/mm2),,,,, Stage,utr1,utr2,utr3,utr4,utr5,utr6 E15.5,16736.84,15505.81,14983.33,14225.81,16296.3, E17.5,39445.57,43668.29,42989.46,43168.14,42644.54, E18.5,44970.28,47391.67,41729.08,48685.72,49032.26, E19.5,45619.63,41751.63,45232.26,41083.33,, P0,47481.25,49631.58,45660.72,45845.68,45164.71,47363.06 P2,50664.74,51680.72,44519.77,41280.25,50005.78,