 This study will evaluate the safety of three doses of BSYX-A110 in adults before initiating studies in the target population of low birth weight infants. This will be an open label, dose-ranging study of BSYX-A110 in 12 adults. The dose levels to be evaluated are 3, 10 and 20 mgkg. Each dose level will enroll 4 adult volunteers who will receive one dose of BSYX-A110 intravenously. The primary endpoint of this study is safety and tolerability. The secondary endpoints include the pharmacokinetics of the rise in anti-LTA antibody and opsonic activity against S. epidermidis. 