- A recombinant cysteine-rich section of the Entamoeba histolytica galactose-inhibitable lectin is efficacious as a subunit vaccine in the gerbil model of amebic liver abscess. Soong, C.J., Kain, K.C., Abd-Alla, M., Jackson, T.F., Ravdin, J.I. J. Infect. Dis. (1995)