Converse of subject

• cause: Predisposition to motor neuron degeneration because of the glial, vascular, and lymphatic changes caused by poliovirus.

• damage: Figure 1. Brain stem centers damaged by the poliovirus involved in brain activation and blood pressure and heart rate regulation.

Converse of object

• find: Up to now they had struggled to find the poliovirus in human spinal tissue.

Adjective modifier

• wild: He hoped our sensitive immune system would react by creating antibodies to these viral corpses that would also protect us against living wild poliovirus.

• attenuated: Complete nucleotide sequence of the attenuated poliovirus Sabin 1 strain genome.

• endemic: Diseases of close association: In 1994, an international commission certified the eradication of endemic wild poliovirus from the Americas.

Modifies a noun

• lesion: Postmortem histopathology from nearly fifty years ago demonstrated the consistent presence of poliovirus lesions in specific brain areas.

• vaccine: Both types were isolated about 3 months after routine oral poliovirus vaccine administrations in May and October.

• infection: Paralytic disease is due to poliovirus infection of the motor neuron.

• receptor: Expression of poliovirus receptor in human spinal cord and muscle.

• strain: Natural genetic exchanges between vaccine and wild poliovirus strains in humans.

• type: Mapping of sequences required for mouse neurovirulence of poliovirus type 2 Lansing.

Noun used with modifier

• type: There was an extensive epidemic of poliomyelitis in Iceland caused by Type I poliovirus that coincided with and was followed by outbreaks of ID.