TY  - RPRT
TI  - Thymic factor in human sera demonstrable by a cyclic AMP assay.
AU  - A Astaldi
AU  - G C Astaldi
AU  - P T Schellekens
AU  - V P Eijswoogel
PY  - 1976
DO  - 10.1038/260713a0
UR  - https://pubmed.ncbi.nlm.nih.gov/177886/
ID  - 177886
ER  -