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