Based on synonyms in MeSH and EMTREE databases and assuming hyphenated terms will retrieve hyphenated terms as well as those with spaces.
interleukin-2-receptor-α OR CD25 OR CD-25 OR IL-2R-alpha OR IL-2Ralpha OR IL2Ralpha OR IL-2R-α OR IL-2Rα OR IL2Rα OR Interleukin-2-Receptor-alpha OR Interleukin-2-Receptors-alpha OR Interleukin-2Ralpha OR Interleukin-2R-alpha OR Interleukin-2-Receptor-α OR Interleukin-2-Receptors-α OR Interleukin-2Rα OR Interleukin-2R-α OR Tac-P55 OR TacP55
