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children receiving their smallpox vaccinations were participants in nigeria smallpox eradication program

unidentified sheets of algae were wrapped in a mass of what appeared to be a mucoid amorphous biofilm

sheets of algae were wrapped in a mass

number of unidentified oblong elliptical shaped diatoms were featured

chitinous abdominal exoskeletal plates were seen overlapping proximally to its distal tip

these were the tools used by the pakistani malaria control team when they were mixing malathion powder

negative stained transmission electron micrograph recreated 1918 influenza virions that were collected from the sup

1918 influenza virions that were collected from supernatants of 1918 infected madin darby canine kidney cells cultu

this was a group of campas a former wanderer tribe who were being investigated

these were field clinicians during the world wide smallpox eradication efforts

these tracks in snow were made by a deer mouse peromyscus maniculatus

these nigerian women were about to receive smallpox vaccinations

nigerians were receiving their smallpox vaccinations

bangladesh men were analyzing collected data
