Trypsin is a valuable enzyme used in our IRL. In order to determine if treatment is successful, we test trypsin treated reagent red cells with N lectin (Vicea Graminea). Trypsin treated N negative red cells test positive with N lectin. Unfortunately, we have been informed that our current suplier of N lectin is stopping production. We are in search of a new source of N lectin and are wondering what other labs are using. We have procedures for making the lectin ourselves, but we are unable to find a supplier of Vicea Graminea seeds. Any information is appreciated.