Under {HEAD ~ these conditions cells} extend neurites, develop electrical excitability and express genes encoding {TAIL ~ neuronal cell specific proteins}  
Under { HEAD ~ these conditions cells } extend neurites , develop electrical excitability and express genes encoding { TAIL ~ neuronal cell specific proteins }
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH