Cholesterol-Lowering Fiber. The dietary fiber in guava helps protect your heart by promoting healthy cholesterol levels. High LDL cholesterol is a risk factor for heart disease, and consuming dietary fiber helps reduce blood LDL cholesterol levels, according to the Linus Pauling Institute.uava is a source of antioxidants, which help protect your heart. A 2-ounce guava fruit provides 125 milligrams of vitamin C, or 208 percent of the daily value. Individuals with a higher consumption of vitamin C have a lower risk of developing coronary heart disease, according to the Linus Pauling Institute.
Types of Cell Culture Contamination The two main forms of cell culture contamination are chemical and biological. Chemical cell culture contamination refers to the adulteration of a cell culture with nonliving substances that have a negative impact on the culture system.
- Contaminated cell lines - Serum - Media - Lab personnel - Hoechst stain - Microbial culture - Specialized kits - PCR - Aseptic technique - Antibiotics - Ultrafiltration (< 0.04 Âµm) - Use sterile products - Avoid using animal-derived products - Store cell line stocks in vapor phase of LN 2 , not in liquid phase Cellular - Cross-contamination of cultures - Cross use or sharing of media from a different cell line. - Cell authentication to determine identity and species of cells - Work with only one cell line at a time - Thoroughly clean before and after introducing a new cell line into the laminar flow hood - Store cell line stocks in vapor phase of LN 2