- Sensitive determination of cystathionine and assays for cystathionine beta- and gamma-lyase, as well as cystathionine beta-synthase, using high-performance liquid chromatography. Ohmori, S., Nakata, K., Nishihara, K., Yamamoto, S., Kawase, M., Tsuboi, S. J. Chromatogr. (1992)