SELECT "NCBI Accession Number (mRNA/Protein)" FROM table_7847 WHERE "Species" = 'mus musculus'
What is the NCBI Accession Number (mRNA/Protein) for the mus musculus Species?
CREATE TABLE table_7847 (
    "Species" text,
    "Species common name" text,
    "NCBI Accession Number (mRNA/Protein)" text,
    "Length (bp/aa)" text,
    "Protein Identity" text
)