Biosafety classification is based on U.S. Public Health Service Guidelines, it is the responsibility of the customer to ensure that their facilities comply with biosafety regulations for their own country.
Only young cells (rings) can be frozen in glycerolyte medium* because their membranes are more robust.
Branton MBStudies of clonal populations of NK65 Plasmodium berghei Ph.D. thesis, Univ. Illinois, 1978
