The invention includes the use of {HEAD ~ agitation} to enhance the penetration of an effective amount of {TAIL ~ cryoprotectant} 
The invention includes the use of { HEAD ~ agitation } to enhance the penetration of an effective amount of { TAIL ~ cryoprotectant }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL