On the tract of ethylene thiourea: Ruddick, J. A., Newsome, W. H. & Iverson, F. (1977). A comparison of the distribution, metabolism and excretion of ethylenethiourea in the pregnant mouse and rat. Teratology 16, 159 Allen, J. R., Van Miller, J. P. & Seymour, J. L. (1978). Absorption, tissue distribution and excretion of 14C ethylenethiourea by the rhesus monkey and rat. Res. Commun. chem. Path. Pharmac. 20, 109