1, no or few hemocytes (b10) were attached to the beads
2, hemocytes present in less than one-third of the beads' surface areas
3, hemocytes present in more than one-third but less than a half of the beads' surface areas
4,hemocytes present in more than a half but less than three-quarter of the beads' surface areas
5, hemocytes present around all of the beads'surface areas (as shown in Fig. 3A).