Fig. 7. Crassostrea gigas (mollusc). Concentration-dependent inhibition of the luminol-dependent chemiluminescence response of oyster haemocytes from a common pool of cells (10⁶ cells ml^-1) by aldehydes (at concentrations of 2 and 50 µmol l^-1). For each treatment, values are the results of triplicate measurements of the chemiluminescence responses, within 15 min before and 45 min after addition of the stimulatory Zymosan particles (arrow).