Section A six nutritional elements of microbes (微生物的六类营养要素) Section B Nutritional type of microbe Section C How the nutrients enter into the cell (营养物质进入细胞的方式) Section D Medium(培养基)
Definition PEM is manifested primarily by inadequate dietary intakes of protein and energy. PEM is almost always accompanied by deficiencies of other nutrient. PEM can be divided as primary PEM and secondary PEM