  Intensive quest for the eta and eta' bound states is currently ongoing at
both theoretical and experimental levels e.g. at COSY, ELSA, GSI, JINR, JPARC,
LPI, and MAMI. These studies were already supported by data provided by the
COSY-11 collaboration including determination of the total width of the eta'
meson. In addition, the first rough estimation of the eta'-N interaction from
the excitation function of the cross section for the pp-->pp eta' reaction was
also performed. Recent precise measurement in this field from the COSY-11
experiment allows to summarize results on the eta' meson production cross
section in proton-proton collisions at COSY-11.
