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