Timothy Hla Patricia K. Donahoe Professor of Surgery Lipid signaling in immunity and inflammatory disease My laboratory studies the biology of the bioactive lipid mediator- sphingosine 1-phosphate... Read more about Timothy HlaPublicationsBoston Children's Hospital Dept of Surgery, Karp Building, 12.211 1 Blackfan Circle Boston, MA 02115timothy.hla@childrens.harvard.edup: (617) 919-2179