Fig. 3. The percentage of cells (± s.e.m.) from cell monolayers of Tiedemann body, coelomic epithelium, axial organ, pyloric caeca and coelomocytes that show FITC-labelled anti-BrdU 4h post injection of either CMFSS buffer (Cont) or ConA (N=6). The numbers of labelled cells indicate the rate of cell division during 3h of BrdU incubation, as described in Materials and methods. P-values show significant increases of proliferation in coelomic epithelium and axial organ compared with controls.