Your Query returns 19 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MYL2NM_1704747227LC2    RLC    dro    MLC2    MRLC    RLC2    Dmlc2    MLC-2    CG2184    DmMLC2    l(3)99Eb    dro MLC-2    Ifm(3)99Eb    Myosin LC2    Myosin Light Chain-2    Myosin Regulatory Light Chain    muscle-specific myosin regulatory light chain   
MYL2NM_0798477227LC2    RLC    MLC2    MRLC    RLC2    Dmlc2    MLC-2    CG2184    DmMLC2    l(3)99Eb    Ifm(3)99Eb   
MYL2NM_1704747227LC2    RLC    MLC2    MRLC    RLC2    Dmlc2    MLC-2    CG2184    DmMLC2    l(3)99Eb    Ifm(3)99Eb   
MYL2NT_0337777227LC2    RLC    MLC2    MRLC    RLC2    Dmlc2    MLC-2    CG2184    DmMLC2    l(3)99Eb    Ifm(3)99Eb   
MYL2M119477227
MYL2J028549606160781
MYL2M945479606160781
Myl2NM_01086110090MLC-2    Mlc2v    Mylpc    MLC-2v    160781
Myl2NW_04756210116
MYL2BC0310089606MLC2    160781
MYL2BC0158219606MLC2    160781
MYL2BC0310069606MLC2    160781
MYL2AY4196589606160781
MYL2AY4196599598
MYL2AY41966010090160781
MYL2NM_0004329606MLC2    160781
Myl2NT_03931210090160781
MYL2NT_0097759606160781
Myl2NM_01260510116MLC2    Mylpf    Myolc1   

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002