Interleukin-5 receptor (IL-5R) ligands comprising amino sequences of
formula TGGGDGYVX.sub.3VEX.sub.4ARCPTCK, EGYVX.sub.3VEX.sub.4ARCPTCK,
EGYVX.sub.3VEX.sub.4ARCPTCR, GYVX.sub.3VEX.sub.4ARCPTCG,
EGYVX.sub.3VEX.sub.4ARCPTCG, GYVX.sub.3VEX.sub.4ARCPTCR, and
EGYVX.sub.3VEX.sub.4AACPTCR, and methods of using the same, are described
and claimed.