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.
1. ? Allow the cells to encyst.? To detach cysts from the plate flush the surface with 5 ml fresh ATCC medium 1323 (Page's Balanced Salt Solution).? Rub the surface of the plate with a spread bar to detach adhering amoebae.
2.?? Transfer the cyst suspension to a sterile centrifuge tube.
3. ? If the cyst concentration does not exceed 2 x 106 cysts/ml adjust the suspension to that concentration.? To adjust the concentration, centrifuge at 600 x g for 5 min and resuspend the pellet in the volume of fresh medium required to yield 2 x 106.
4.?? While cells are centrifuging prepare a 15% (v/v) solution of sterile DMSO as follows:? Add the required volume of DMSO to a glass screw-capped test tube and place it in an ice bath.? Allow the DMSO to solidify.? Add the required volume of refrigerated medium.? Dissolve the DMSO by inverting the tube several times.?
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De Jonckheere JF. A Group I intron in the SSUrDNA of some Naegleria spp. demonstrated by polymerase chain reaction amplification. J. Eukaryot. Microbiol. 40: 179-187, 1993. PubMed: 8461891
Adams M, et al. A genetic approach to species criteria in the amoeba genus Naegleria using allozyme electrophoresis. Int. J. Parasitol. 19: 823-834, 1989. PubMed: 2635158
Huizinga HW, McLaughlin GL. Thermal ecology of Naegleria fowleri from a power plant cooling reservoir. Appl. Environ. Microbiol. 56: 2200-2205, 1990. PubMed: 1975164
Robinson BS, et al. Discontinuous genetic variation among mesophilic Naegleria isolates: Further evidence that N. gruberi is not a single species. J. Protozool. 39: 702-712, 1992. PubMed: 1453360
De Jonckheere JF. A century of research on the amoeboflagellate genus Naegleria. Acta Protozool. 41: 309-342, 2002.
name change from Naegleria gruberi to N. pringsheimi per TA Nerad, by e-mail message dated Dec 9 2002
