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Despite these problems and potential dangers :
 Satisfactory results based on motility (significant male-to-male and within male differences) (Benson et al, 2012)
 Simultaneous preservation of relatively big volumes
However :
 Bad recovery of low quality sperm samples
 Labour and time consuming for low quality sperm samples
 New alternative methods to improve sperm cryopreservation have been developed
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Vitrification
« Crystallization is incompatible with living systems and should be avoided wherever possible » Luyet (1937)
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