immunologist, microbiologist, geneticist, molecular biologist, epidemiologist, bacteriologist, infectious disease, scientist, researcher, biochemist, biologist, zoologist, physicist, palaeontologist, pharmacologist, neurobiologist, entomologist, parasitology, neuroscientist, astrophysicist, influenza, astronomer, physiologist, seismologist, paleontologist, biophysicist, ecologist, ethologist, hematologist, anatomist, sociologist, biotechnologist, neuropharmacology, taxonomist, professor, haematologist, economist, crystallographer, egyptologist, arbovirus, cognitive neuroscientist, criminologist, anthropologist, molecular biology, botanist, primatologist, mycologist, embryologist, geophysicist, tropical medicine, variola, penzias, arenavirus, hepatologist, poxvirus, vaccine, molecular genetics, gastroenterologist, chemist, toxicologist, cosmologist, paramyxoviruses, glaciologist, virus, oncologist, ethicist, tuberculosis, limnologist, harold urey, arboviruses, geographer, geriatrician, neuroendocrinology, microscopist, coxsackie virus, alphavirus, zoonotic disease, communicable disease, mammalogist, herpetologist, mycobacterium leprae, howard florey, sinologist, preventive medicine, marburg, postdoc, pediatrician, volcanologist, endocrinologist, theorist, paleobiology, vulcanologist, ichthyologist, climatologist, theologian, neurologist, antiviral drug, oceanographer, smallpox, ornithologist, coauthor, mycoplasma, pathologist, psychiatrist, psychologist, archaeologist, architect, cardiologist, educator, journalist, meteorologist, neurosurgeon

jonas edward salk, jonas salk, salk