Positive test controls include: HeLa, Jurkat. Immunogen sequence: PGRIQRVARG SGVSTRDVQE LLTQYTKFAQ MVKKMGGIKG LFKGGDMSKN VSQSQMAKLN QQMAKMMDPR VLHHMGGMAG LQSMMRQFQQ GAAGNMKGMM GFNNM. Binds to the signal sequence of presecretory protein when they emerge f