NANA antibody is seen in -

Ans. is 'a' i.e., Sarcoidosiso Sarcoidosis is a chronic multisystem disorder characterized by an exaggerated cellular immone response to antigens with the production of various antibodies including rheumatoid factor and antinuclear antibodies (ANA). o Anti ds DNA may be positive that can cause to glomerulonephritis (as occurs in SLE).