Informed consent and eligibility occur at Screening. Dosing is at Visit 2. Blood glucose levels are monitored and adjusted using IV infusion of glucose. Bronchoalveolar lavage (BAL) is performed at 30 minutes and 6 hours for Cohort 1 and at 4 and 8 hours for Cohort 2, post TI dose. A series of blood samples are taken at specified timepoints. Cohort 3 will proceed with dosing if deemed necessary once analysis of BAL from Cohorts 1 & 2 is performed. Visit 3 is the follow-up safety visit.