BrdU-positive cells in the circulation 3 h after injection of cystamine.
A, BrdU-positive cells (green) in the CPBS-injected group; B, BrdU-positive cells in the 75 μg cystamine/g–injected group; and C, BrdU positive-cells in the 150 μg cystamine/g–injected group. D, percentage of BrdU-positive cells relative to total number of hemocytes after cystamine injection at 3 h. Seven crayfish were used in each experimental group. Each symbol represents an individual crayfish. Each symbol represents an individual crayfish, and the data are shown as the mean ± S.D.