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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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An improved technique for the cryopreservation of Onchocerca microfilariae.

Experimental describe the use of ethanediol to store Onchocerca microfilariae in liquid nitrogen. The technique involves a 2-stage incubation of the parasites at 37 degrees C and 0 degrees C in ethanediol, before rapid cooling to -196 degrees C. Viability has been assessed by motility, by migration in a proxy host and by development to the infective stage in the insect vector. A total of 71-79% of the cryopreserved microfilariae was shown to be viable compared to unfrozen controls. The technique is simple, inexpensive and very effective when compared to previous cryopreservation procedures for microfilariae and should be particularly suited for use under field conditions.[1]

References

  1. An improved technique for the cryopreservation of Onchocerca microfilariae. Ham, P.J., Townson, S., James, E.R., Bianco, A.E. Parasitology (1981) [Pubmed]
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