Serum and liver samples were collected from Zebu Gudali and Zebu Banyo cattle freshly slaughtered in abattoirs at eight different locations in each of the five administrative divisions of the Adamaoua region of Cameroon during the wet season (September to October. 1983) and the dry season (February to March. 1984). Liver samples were analysed for iron. https://allfixelectricales.shop/product-category/high-temperature-oil/