What is the name of the organism that causes the following diseases: 1880 –Typhus

1882 –Tuberculosis

1883 –Cholera

1884 –Tetanus

1886 –Pneumonia

1887 –Meningitis

1894 –Plague

1898 –Dysentery

Investigator a has biological specimens that are coded and linked to identifiers of the source individuals. investigator a provides the specimens to investigator b but does not provide the individual identifiers. investigator b agrees not to re-identify the source individuals. is investigator b's research using the biospecimens human subjects research according to the definition of human subjects research in the federal regulations?