Protozoan cysts are found in a wet mount of sediment from ethyl-acetate concentrated material. The cysts are without peripheral chromatin on the nuclear membrane. Each cyst has four nuclei and each nucleus has a large karyosome that appears as a refractive dot. These oval-shaped cysts are most likely:

Which of the following organisms must be incubated in an anaerobic environment for optimal recovery of the organism?

Which of the following serum constituents is unstable if a blood specimen is left standing at room temperature for a minimum of 8 hours before processing?

In acute pancreatitis, a significant increase in which serum enzyme would be expected diagnostically?

Which of the following specimen requests is acceptable?

A 21 yr old patient presents with pharyngitis. A throat swab is collected and submitted for anaerobic culture. The specimen should be:

Which of the following statements is false regarding hemolytic disease of the newborn?

A multiply transfused patient developed a headache, nausea, fever and chills during his last transfusion. What component is most appropriate to prevent this reaction in the future?

Which of the following factor deficiencies is associated with either no bleeding or only a minor bleeding tendency, even after trauma or surgery?

A presumptive identification of E. coli may be reported based on: