Definitions for "Species barrier"
Keywords:  tse, difficult, barrier, hinders, goats
a barrier between species of animals that hinders or prevents the passage of a disease between these species. For TSEs to cross the species barrier it appears that a much larger dose of the infectious agent is required.
The naturally occuring barrier between different species of animal which makes transfer of a disease from one to the other difficult.
A naturally occurring barrier between different species of animal which makes transfer of TSE from one to the other difficult.