Examples of suitable sources include commercially available sources, such as Carticel® , {HEAD ~ embryonic sources}, tissue culture sources or {TAIL ~ any other suitable source} 
Examples of suitable sources include commercially available sources , such as Carticel ® , { HEAD ~ embryonic sources } , tissue culture sources or { TAIL ~ any other suitable source }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL