Abstract
Blood samples from 25 adult and 6 immature cuis were examined. There were slight differences in red cell parameters (RBC, Hb, PCV, MCV, MCH, & MCHC) between cuis and guinea-pigs. The total white cell count of cuis was much lower. The neutrophils of the cuis, as of the guinea-pig, had eosinophilic granules and were therefore termed pseudoeosinophils. Kurloff bodies were not present in mononuclear cells. There were more platelets in cuis blood compared with guinea-pig blood. The choice of anaesthetic did not influence any of the red cell parameters of the cuis, but may have affected the relative numbers of pseudoeosinophils, the platelet count and the percentage of reticulocytes. Immature animals had a lower erythrocyte count, a higher MCH and fewer platelets than adults.