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Open Access Phenotypic Analysis of C57BL/6J and FVB/NJ Mice Generated Using Evaporatively Dried Spermatozoa

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Combination of evaporative drying and frozen storage at –80 °C has been used successfully to preserve hybrid B6D2F1 mouse spermatozoa. To determine whether this method can be applied equally well to inbred mice, spermatozoa of C57BL/6J and FVB/ NJ mice were evaporatively dried and stored for 1 mo at –80 °C before being used for intracytoplasmic sperm injection (ICSI) to produce live offspring. After weaning, 1 male and 1 female mouse from each litter were randomly selected at 8 wk of age for natural mating to produce live offspring. Results showed that spermatozoa from both inbred strains that had been evaporatively dried and subsequently stored at –80 °C could be used successfully to derive live, healthy, and reproductively sound offspring by ICSI. No significant differences were found in embryo transfer rate (number of pups born/number of embryos transferred), litter size, weaning rate, body weight, number of pathologic lesions, and amount of contamination by pathogens of mice produced by ICSI using evaporatively dried spermatozoa compared with mice produced by natural mating or by ICSI using fresh (that is, nonpreserved) spermatozoa. Progeny produced by mating mice generated from ICSI using evaporatively dried spermatozoa were normal. Therefore, spermatozoa from inbred mouse strains C57BL/6J and FVB/NJ can be preserved successfully after evaporative drying and frozen storage at –80 °C.

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Document Type: Miscellaneous

Publication date: 2007-10-01

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  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

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