Based on the WBC differential panel results, it appears that your patient's mature B-cell count is low. This could indicate a compromised immune system, as B-cells play a crucial role in antibody production and fighting off infections.
Additionally, the naive T-cell count being normal suggests that there may not be an issue with T-cell production, but the low mature B-cell count may still leave the patient vulnerable to certain infections. Further evaluation and testing may be needed to determine the specific cause of the compromised immune function and the best course of treatment.