11beta hydroxypregna 1,4 diene 3,20 dione Hydroxyprogesterones 8 Thymus Gland 8 nonhuman 8 unclassified drug 8 Male 6 Rats 6 Rats, Inbred Strains 6 Uridine 6 animal cell 6 animal experiment 6 article 6 corticosterone 6 intraperitoneal drug administration 6 radioisotope 6 rat 6 thymocyte 6 Animal 4 Animals 4 Female 4 Mice 4 Mice, Inbred BALB C 4 RNA 4 Support, Non-U.S. Gov't 4 controlled study 4 dexamethasone 4 dose response 4 drug response 4 in vitro study 4 mouse 4