C-terminal 6xHis fusion protein of antigen EsxB (LHP) (CFP10)(Rv3874) (M. Tuberculosis/H37Rv)(a.a.1-104) (Genbank Accession No. NP_21839). 10KDA culture filtrate antigen. Contains probable coiled-coil from aa 49-93. Belongs to the ESAT6 family. Note that previously known as lhp (alternate gene name: cfp10). A core mycobacterial gene; conserved in mycobacterial strains.