c("gestational age (weeks): 18", "facs population: LeX/Glast/Prominin-negative")
c("gestational age (weeks): 18", "facs population: LeX+ Glast+ Prominin-low")
c("gestational age (weeks): 18", "facs population: LeX+ Glast+ Prominin-high")
c("gestational age (weeks): 19", "facs population: LeX+ Glast+ Prominin-low")
c("gestational age (weeks): 19", "facs population: LeX+ Glast+ Prominin-high")
c("gestational age (weeks): 18", "facs population: LeX/Glast/Prominin-negative")
c("gestational age (weeks): 18", "facs population: LeX+ Glast+ Prominin-low")
c("gestational age (weeks): 18", "facs population: LeX+ Glast+ Prominin-high")
c("gestational age (weeks): 19", "facs population: LeX/Glast/Prominin-negative")