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单词 visna
释义

visna

/ˈvɪznə /
noun [mass noun] Veterinary Medicine
A fatal disease of sheep in which there is progressive demyelination of neurons in the brain and spinal cord, caused by the maedi virus.It is a voluntary scheme with over 2800 flocks that have been blood tested and are accredited free of Maedi visna....
  • We conclude that sheep sera have a visna virus inhibiting factor and hypothesise that VIF inhibits early spread of visna virus in inoculated sheep and may be involved in initiating the persistent infection.

Origin

1950s: from Old Norse, 'to wither'.

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更新时间:2024/12/23 21:32:42