A client brings in her beloved rabbit, Bourbun, who has rece…

A client brings in her beloved rabbit, Bourbun, who has recently presented with purulent nasal discharge and a head tilt, which she mentions has been worsening over the last month. The owner has been reading extensively on ‘the google’ and is concerned about E. cuniculi; however, after drawing blood and submitting it to a diagnostic laboratory, Bourbun has a negative antibody titer to E. cuniculi. You begin to suspect a different etiology entirely. Which of the following would be the most effective next step in terms of treatment?

A researcher received a shipment of MALE mice from The Jacks…

A researcher received a shipment of MALE mice from The Jackson Laboratory. These mice were originally distributed into groups as littermates. However, the researcher thinks that it would be better to randomly assort the male mice into groups that are non-littermates. You tell him that this will very likely cause: