1935 48 571/1 During a study of the beta-radiation from a sample of silver radiochloride..it was found possible to follow the decay of the radiochlorine.
2003 W. W. Shreeve & R. N. Pierson in L. E. Feinendegen et al. xii. 262/1 About 23% of the space penetrated in the first few hours by radio-bromide or radio-chloride is intracellular.