Topics of articles in this issue of Cornell Veterinary Medicine include: Biosecurity: From Field to Laboratory, Cornell Veterinarians Play a Major Role; About the Animal Health Diagnostic Laboratory; A Consummate Veterinarian (Donald H. Lein); Curriculum Vitae: Donald H. Lein; Sidney Nusbaum Remembered; AHDL Directors to be Honored; Grohn Named to Head Population Medicine and Diagnostic Services [Department]; Turning the Tide; Honors, Gifts, and Grants; On Behalf of Boo-Boo, A Million Thanks; Linear Accelerator to be Dedicated; Endnote (Donald F. Smith): Coming Events.