Salk 
(sôlk), Jonas Edward 1914-1995.
(sôlk), Jonas Edward 1914-1995. American microbiologist who developed the first effective killed-virus vaccine against poliomyelitis, introduced publicly in 1955.
Jonas Salkphotographed in the mid-1950s
- spillikin
- spillover
- spill the beans
- spillway
- spilt
- spilth
- spim
- spin
- spina bifida
- spinach
- spinal
- spinal anesthesia
- spinal canal
- spinal column
- spinal cord
- spinal fluid
- spinal ganglion
- spinally
- spinal meningitis
- spinal muscular atrophy
- spinal nerve
- spin angular momentum
- spin caster
- spin casting
- spindle