| CPC C40B 40/08 (2013.01) [C12N 15/1086 (2013.01); C12N 15/65 (2013.01); C12N 15/86 (2013.01); C12N 2740/15022 (2013.01); C12N 2740/15043 (2013.01)] | 17 Claims | 

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               1. A fusion imaging gene, wherein the fusion imaging gene comprises a bioluminescence imaging gene, a fluorescent protein gene and a calcium imaging gene, and the three genes are linked by linkers; 
            the bioluminescence imaging gene is selected from a Nanoluc gene; 
                the fluorescent protein gene is selected from a mRuby2 gene; 
                the calcium imaging gene is selected from a Gcamp6f gene; 
                the Nanoluc gene and the mRuby2 gene are linked through Linker 1, as shown in SEQ ID NO.8; the mRuby2 gene and the Gcamp6f gene are linked through Linker 2, as shown in SEQ ID NO.9; 
                a nucleotide sequence of the fusion imaging gene is shown in SEQ ID NO.1. 
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