| The present work deals with the cadmium induced ultra structural changes found in the spleen of Tilapia mossambica (Peters). Fishes were exposed to a sub lethal concentration of 8 ppm of CdCl for 6 days and 22 days. Treatment induced changes differ from one cell type to the 2 other. Some of which are common to all cell types include vacuolation of cytoplasm, appearance of vesicles within the cytoplasm, increased endoplasmic reticulum, vacuolation of mitochondria and deposition of electron dense material. |