Write the advantages and disadvantages of serum in the culture media.
Advantages of Serum: Serum is one of the most important components of cell culture media. It is a good source of amino acids, proteins, vitamins, carbohydrates, lipids, hormones, and growth factors. Serum provides binding proteins like albumin and transferrin that carry other molecules into the cell. It also supplements adhesion factors that help cells adhere to the substratum before they begin to divide. Fetal bovine serum is commonly used to support the growth of cells in culture.
Disadvantages of Serum: Serum contains insufficient amounts of cell specific growth factors and cannot be used as a stand-alone medium. It may contain cytotoxic compounds and growth inhibiting factors that inhibit cell growth and proliferation. Serum carries a high risk of contaminants like viruses, fungi, and mycoplasma. It may interfere with the purification and isolation of cell culture products. Additionally, the quality of serum varies from batch to batch and deteriorates within one year, requiring fresh testing for every batch.
Explanation
The textbook context provides clear advantages and disadvantages of serum in culture media. Advantages include its role as a source of nutrients (amino acids, proteins, vitamins, carbohydrates, lipids, hormones, growth factors), binding proteins (albumin, transferrin), and adhesion factors. Disadvantages include insufficient cell-specific growth factors, presence of cytotoxic compounds and growth inhibitors, risk of contaminants (viruses, fungi, mycoplasma), interference with product purification, and batch-to-batch variation requiring fresh testing.