Blood cells of P. multiclathrata stained with 2,2-bipyridine, viewed under compound microscope with Tuscon camera system at 40X magnification. (a) Signet ring cell (arrowhead). Compartment cell type I (black arrow). Morula cell (white arrow). Scale bar = 10μm. (b) Pigment cell (white arrow). Morula cell (black arrow). Vanadocyte; probable signet ring cell or transitional form (arrowhead). Scale bar = 10μm. (c) Compartment cell; typical form (white arrow). Morula cell (black arrow). Scale bar = 10μm.(d) Compartment cells; unusual form (white arrows). Morula cell (black arrow). Scale bar = 10μm. (e) Compartment cell type I (white arrow). Compartment cell type II (black arrow). Morula cell. Scale bar = 10μm. (f) Compartment cell type I (white arrow). Compartment cell type II (black arrow). Scale bar = 10μm.