Suspension of chitin and chitosan particles (mean size of 1 mu m) were
found to attract canine neutrophils chemotactically as determined by
a checkerboard assay through polycarbonate filter with 5 mu m pore siz
e in Blind well chamber. Suspension of chitin induced chemokinetic mig
rations of the neutrophils. These evidences might reflect accumulation
of neutrophils to chitin- and chitosan-implanted regions in dogs.