DR SAMBUNATH DEwas an Indian bengali medical scientist and researcher. he discovered the cholera toxin the animal Model of cholera and successfully demonstrated method of trnsmission of cholera pathogen vibrio cholorae. . inspire of his great work the State and central govs failed to recognize his services to the nation that is considered as the greatest lapse of the govts.He was, awarded coates medalfrom calcutta university in 1956 and Dsc from university of London, Dsc hon from calcutta university in 1994,FRS in 1947, fellow of Royal Society of medicine London in 19471 and lmember of pathological society of great Britain and Ireland in 1949.