RT Journal Article SR Electronic T1 Organ Distribution of 99mTc-and 51Cr-Labeled Thymocytes JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 633 OP 638 VO 16 IS 7 A1 Rolf F. Barth A1 Om Singla YR 1975 UL http://jnm.snmjournals.org/content/16/7/633.abstract AB