Graves in the Slave Cemetery at Mount Vernon are unmarked, but we have the names of a few individuals thought to be buried in the cemetery including Frank Lee, the Washingtonâs butler who was present at the funeral of George Washington.
Disease agent is a crossword puzzle clue that we have spotted 1 time. There are related clues (shown below).isease agent is a crossword puzzle clue that we have spotted 1 time. There are related clues (shown below).
Viruses were filtered through these and called âfilterableâ organisms. Loeffler and Frosch (1898) reported that the infectious agent of foot and mouth diseases virus was a filterable agent. In 1900 first human disease shown to be caused by a filterable agent was Yellow Fever by Walter Reed.irology â the study of viruses. The study of viruses is called virology. Experiments on virology began with the experiments of Jenner in 1798. Jenner did not know the cause but found that that individuals exposed to cow pox did not suffer from small pox.