Someone asked about ALK-1 controls about two weeks ago and I have some available for $300.00 per block. Kim Stecker The Salk Instutue of Biological Sciences 10010 N. Torrey Pines Rd. La Jolla, CA 92037 Phone: 858-453-4100 X1010 Fax: 858-597-0824 email: stecker <@t> salk.edu