Volume regulation in the coelomocytes of the blood wormGlycera dibranchiata

Median volumes ofin vitro coelomocyte populations fromGlycera dibranchiata rapidly change in response to external differences of osmotic pressure (Fig. 3). Fifty per cent haemolysis occurred in just under 30% sea water, 285 mOSm·kg−1. Hydraulic conductivities (Lp=0.92 to 2.78×107 cm×s−1·atm−1) calculated from rates of osmotic swelling were similar to values for sea urchin eggs and squid axons. Coelomocytes show a slower partial return to their …