Live mouse mutagenesis systems for testing mutagenic agents in v

Multicellular living organisms and unmodified parts thereof and – Nonhuman animal – Transgenic nonhuman animal

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800 3, 800 25, 424 92, A01K 67027, A01K 6900, C12N 1500

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060546336

ABSTRACT:
Novel transgenic nonhuman animals, such as transgenic mice, for detecting and characterizing mutations in vivo are disclosed. When detecting reverse mutations, such as mutations of the APRT gene, the transgenic nonhuman animal now afford the unique advantage of detecting and characterizing mutations in vivo without having to sacrifice the animals as required heretofore. Moreover, since the transgenic nonhuman animals do not need to be sacrificed, they provide the unique opportunity to correlate the incidence and location of tumors (carcinogenesis) with the incidence and location of mutagenesis. Also disclosed are novel constructs, cell lines and chimeric animals for producing the novel transgenic animals. Novel methods for detecting and characterizing the mutations in vivo and producing animals for use in accordance with the methods of the instant invention are disclosed.

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