Reservoirs for fresh and waste media, including individual cocktails of {HEAD ~ growth factors}, are located next to the Chamber and maintained at 4° C. Small volume syringe pumps are used to deliver growth factors and base medium to user specified compositions, and {TAIL ~ waste media} is aspirated from wells using the same pipette 
Reservoirs for fresh and waste media , including individual cocktails of { HEAD ~ growth factors } , are located next to the Chamber and maintained at 4 ° C. Small volume syringe pumps are used to deliver growth factors and base medium to user specified compositions , and { TAIL ~ waste media } is aspirated from wells using the same pipette
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