EFFECT OF CADMIUM CHLORIDE ON THE THORACIC GANGLION OF THE FRESHWATER PRAWN, MACROBRACHIUM KISTNESISP.B. Brahmapurikar and R. NagabhushanamAbstract The neurosecretory cells of thoracic ganglia after acute and chronic exposure to cadmium chloride were observed. For acute study 24 hours LC50 0.688 ppm and for 96 hours LC50 0.408 ppm were taken. For chromic study (i.e. 7 days and 21 days) 1/10th of LC50 of 48 hours was taken i.e. 0.054 ppm. Severe damage to the tissue and neurosecretory cells was observed. The major changes in the thoracic ganglion after treatment with cadmium chloride of fresh water prawn M. Kistneusis were vacuolization in cytoplasm, change in cell shape, thickened, undulated cell wall.
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