Leukocyte Evaluation of the Free-Ranging Deermouse ( Peromyscus maniculatus ) from Montana, USA.

We generated reference ranges for seasonal leukocyte differential counts of the free-ranging deermouse (Peromyscus maniculatus) from Montana, US. Blood was collected from the retro-orbital capillary sinus of deermice after topical anesthesia with proparacaine. Although season influenced lymphocyte, neutrophil, and monocyte absolute counts, sex and reproductive status did not.