RT Journal Article SR Electronic T1 Distribution of 99mTc and Tumour/Brain Concentrations in Rats JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 404 OP 408 VO 6 IS 6 A1 C. M. E. Matthews A1 J. R. Mallard YR 1965 UL http://jnm.snmjournals.org/content/6/6/404.abstract AB