To Calculate the Pharmacokinetics (Concentration of Compound in and Rate of Excretion From the Blood) Following a Very Low Dose of Compound Which Will Not Have Any Pharmacological Activity

Inclusion Criteria: * healthy male subjects between the ages of 18 and 50 years inclusive. (healthy is defined as no clinically relevant abnormalities identified by a detailed medical history, full physical examination including blood pressure and pulse rate measurement, 12-lead ECG and clinical laboratory tests) * Body Mass Index (BMI) of 17.5 to 30.5kg/m2l and a total body weight of between 50 and 100kg inclusive. * Evidence of a personally signed and dated informed consent document indicating that the subject (or a legally acceptable representative) has been informed of all pertinent aspects of the trial. Exclusion Criteria: * Evidence or history of clinically significant haematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, genitourinary, psychiatric, neurologic or allergic disease (including drug allergies, but excluding untreated, symptomatic, seasonal allergies at time of dosing) * History of febrile illness within 5 days prior to the first dose a positive urine drug screen